A cork float a distance of 8. 75 meters down river after a period of 3. 5 hours what is the average speed? Help!! Please
2.5 m.p.h. When tiny ripples cross the water's surface, the cork moves vertically up and down. A piece of cork begins to float up from resting at the lake's bottom.
Plotting its velocity v versus time t. Due to the non-volatile impurity it contains, its freezing point will be below zero degrees Celsius. The floating body has no apparent weight. It turns out that the weight of the fluid displaced by the object equals the buoyant force. Use the phrase: for issues like these. Distance travelled divided by time equals average speed. Therefore, the average speed is 8.75 / 3.5, or 2.5 m.p.h.
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where do photosynthetic organisms get the energy needed to make glucose molecules?
Answer: During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.
Explanation:
where does hair growth occur? where does hair growth occur? hair medulla hair matrix hair shaft hair cuticle hair cortex
The papilla (pronounced puh-PILL-uh) is located at the bottom of the follicle and is where hair development occurs. The papilla includes an artery that feeds the hair root.
Cells grow and produce keratin to harden the structure, which is then pushed up the follicle and through the skin's surface as a hair shaft.
Growth begins in the root (dermal papilla) of your hair follicle, which supplies your hair with blood and nutrients. Each month, your hair grows roughly 1 centimeter.
Each hair is anchored into the skin by a hair follicle. The hair bulb is the foundation of the hair follicle. Living cells divide and proliferate in the hair bulb to form the hair shaft. The cells in the body are nourished by blood arteries.
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Diffusion rate is fastest when the concentration gradient is:A. steepest and temperature is highestB. steepest and temperature is at body temperatureC. slightest and temperature is highestD. slightest and temperature is at body temperatureE. slightest and temperature is lowest
A. When the temperature is highest and the concentration gradient is steepest, the diffusion rate is at its fastest.
The movement of molecules from a high-concentration area to a low-concentration area is known as diffusion. The rate at which molecules will diffuse is determined by the steepness of the concentration gradient, which is the difference in concentration between two points. Molecules will move more quickly to equalize the concentration when the gradient is steep because there is a large difference in concentration.
The rate of diffusion is also affected by temperature. The molecules' kinetic energy increases with temperature, making it more likely that they will collide and move from a high-concentration area to a low-concentration area. The diffusion rate will be greatest at high temperatures.
In conclusion, the response to the question is A. highest temperature and steepest.
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which leukocytes have cytoplasmic granules that stain red and bilobed nuclei?
The leukocytes with cytoplasmic granules that stain red and bilobed nuclei are called eosinophils.
3) should the parents be concerned about the heterozygous condition as well as the homozygous mutant condition?
True breeding is a form of breeding in which both parents produce children with the same phenotype. This signifies that both parents are homozygous for all traits.
Does homozygous mean both parents?In genetics, homozygous means having inherited the same variants (alleles) of a genomic marker from each biological parent. As a result, a person who is homozygous for a genetic marker has two identical copies of that marker.
Every birth will carry the same level of danger. If both parents have a heterozygous dominant mutation, their offspring have a 50% probability of inheriting the dominant allele (partial or total symptoms), a 25% chance of inheriting both dominant alleles (symptoms), and a 25% chance of inheriting both recessive alleles (no symptoms).
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how many peptides would result if this peptide were treated with (1) cyanogen bromide, or (2) trypsin, or (3) chymotrypsin?
If this peptide was treated, it would provide 2 peptides from cyanogen bromide, no cleavage from trypsin, and 2 peptides from chymotrypsin.
Describe trypsin.Trypsin is indeed an enzymes which thus aids during digestion. An protein is an enzyme whose quickens a particular biological process. Trypsin is found in the digestive system. It can also be produced by fungi, plants, and microbes. However, it is typically made from livestock pancreatic for commercial exploitation.
Exactly how well does trypsin break down proteins?Trypsin breaks the peptide link formed by this identical arginine molecule, or possibly the carboxylic acid group with arginine and the hydrogens of the following amino acid. The rate of cleavage occurs more slowly when the sites of arginine and lysine there in sequencing are nearer to potassium hydroxide biological compounds or cystine.
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Complete question is:
How many peptides would result if this peptide were treated with (1) cyanogen bromide, or (2) trypsin, or (3) chymotrypsin?
a. Cyanogen bromide: _______
b. Trypsin: _________
c. Chymotrypsin: ________
options;
2 peptides
no cleavage
5 peptides
4 peptides
3 peptides
chorionic villus cells are genetically identical to the_____.
Answer:
fetus.
Explanation:
How did the information produced by the Human Genome Project help the development of medicine?
Answer & Explanation: The Human Genome Project (HGP) created the a sequence of the human genome. This advanced medicine in a way that no one could of imagined. Because of the HGP the medical community might be able to identify an undiagnosed disease. Genomic analysis may help identify a diagnosis. Because of the HGP we have fast, large-scale, low-cost DNA sequencing. This has pushed genomics into "mainstream" medicine. This gives doctors the ability to diagnose inherited diseases, target cancer treatments, and identify health risks.
the crystal violet bottle was accidentally filled with iodine. what color will gram-positive cells appear?
The crystal violet used to stain the cells of gram-positive bacteria is retained by the presence of a thick layer of peptidoglycan in their cell walls.
Describe iodine.A mineral called iodine is present in various meals. Iodine is required by the body to generate thyroid hormones. These hormones regulate a variety of vital bodily processes, including metabolism. Thyroid hormones are also required by the body for healthy bone and brain development during pregnancy and infancy.
Everyone should consume adequate iodine, especially children and expectant mothers. Your age determines how much iodine you require daily. Below is a list of typical daily suggested dosages in micrograms (mcg). Iodine is found naturally in some foods and is also added to salt that is labeled as “iodized”.
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What is the mechanism by which species adapt to their environment in order to survive?
For a species to thrive, it must change with its surroundings. Natural selection is the process in question.
Natural selection is a biological process in which a species' environment promotes particular qualities and those who can reproduce and survive pass those traits on to their progeny. The population evolves and adapts to the environment throughout time to live.
For instance, a species may acquire characteristics like increased speed, improved camouflage, and stronger senses if it is exposed to predators.
A species may acquire characteristics like longer snouts, more powerful claws, and more effective digestive systems if it is exposed to a new source of food. The species gradually evolves and changes to fit its environment by passing on these advantageous qualities to future generations.
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The table compares structures found in several groups of photosynthetic organisms. The presence of a structure is symbolized by a (+) symbol, while the absence of a structure is symbolized by a (-) symbol. Using the data in the table, determine where on the cladogram some for the structures evolved. What is the correct order of characteristics, beginning with the most primitive characteristic? You do not need to use all the characteristics.
The structure observed in many classes of photosynthetic organisms is compared in the table. A (+) symbol denotes the existence of a structure, while a (-) symbol denotes its absence.
How does photosynthesis work?
Plants and other creatures employ a process called photosynthesis to transfer light energy, typically from the Sun, into hydrogen gas that can then be released to power the organisms' functions (energy transformation).
What is photosynthesis with oxygen?
Oxygen is released during photosynthesis in cyanobacteria, algae, and plants. The most prevalent type of sunlight used by living things is known as oxygenic photosynthesis. Although there are minor changes, the general mechanism of oxygenic photosynthesis among plants, algae, and bacteria is relatively similar.
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Kimi is a biologist monitoring the giraffe population in Kenya each year. When she first started
monitoring the giraffe population, Kimi estimated that there were 26,000 giraffes. One year
later, she estimated that the population had increased to 27,300. Kimi expects the giraffe
population to continue increasing each year.
Write an exponential equation in the form y = a(b)* that can model the estimated giraffe
population, y, in x years.
Use whole numbers, decimals, or simplified fractions for the values of a and b.
y =
ala
How many years after Kimi's first estimate will the giraffe population be estimated as greater
than 30,000?
yearso
The giraffe population will be estimated as greater than 30,000,
6.06 years after Kimi's first estimate.
Modelling the estimated giraffe population
To model the estimated giraffe population, we need to find the exponential equation that fits the two data points we have: the population in year 0 (when Kimi first started monitoring) and the population in year 1. We can use the formula:
y = a b^x
where y is the estimated population,
a is the initial population (26,000),
b is the growth factor, and
x is the number of years after the initial estimate.
To find b, we can use the formula:
b = (y2/y1)^(1/x)
where y2 is the population in year 1 (27,300),
y1 is the population in year 0 (26,000),
and x is the number of years between year 0 and year 1 (1 year).
b = (27,300/26,000)^(1/1) = 1.0496
Now that we have found b, we can plug it back into the original equation to find the exponential equation that models the giraffe population:
y = 26,000 x 1.0496^x
To find how many years after Kimi's first estimate will the giraffe population be estimated as greater than 30,000, we can solve for x when y = 30,000:
30,000 = 26,000 x 1.0496^x
Taking the natural logarithm of both sides, we get:
ln(30,000/26,000) = ln(1.0496^x)
Dividing both sides by ln(1.0496), we get:
x = ln(30,000/26,000) / ln(1.0496)
Using a calculator, we can approximate x to be 6.06 years.
So, the giraffe population will be estimated as greater than 30,000,
6.06 years after Kimi's first estimate.
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what do you think are some advantages of using a cladogram to classify primates? what are some disadvantages?
Answer:
Cladograms are limited because they do not show how ancestors are related to living species, only that there is a relationship between the various species. Cladograms also do not show the ways in which species have evolved over time.
Explanation:
the process by which homologous chromosomes exchange genetic material?
Answer: crossing over
Explanation:
which two reactions could you compare to assess whether a species specific interaction between tfiib and rna polymerase is needed for transcription?
To assess whether a species-specific interaction between TFIIB and RNA polymerase is needed for transcription, you could compare the transcriptional activity of two different systems: one where TFIIB and RNA polymerase interact normally, and one where this interaction is disrupted.
The addition of inhibitors that prevent the binding of TFIIB to RNA polymerase is one technique to interfere with the interaction. A different method is to alter the TFIIB protein so that it loses its ability to interact to RNA polymerase. You may assess whether the interaction between TFIIB and RNA polymerase is necessary for transcription in that species by comparing the levels of transcription in these two systems.
If transcription relies on the regular contact between TFIIB and RNA polymerase, then the disruption of this interaction should result in less transcription. On the other side, if the interaction is not required, the interruption shouldn't have an impact on the transcription levels.
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Which of these describes the asthenosphere? Choose the correct answer.
O crust
O rigid
O solid
O flowing
Answer:
It's mostly molten...so somewhat flowing...
how does the rotation of the earth affect global air circulation examine this simplified diagram of the earths wind belts , and explain how the coriolis effect influence the direction of the polar easterlies , the westerlies and the trade winds
Answer:The rotation of the Earth affects global air circulation through the Coriolis effect. The Coriolis effect is a phenomenon that causes moving objects, including air currents, to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This effect is due to the rotation of the Earth on its axis and the resultant centrifugal force.
The simplified diagram of the Earth's wind belts shows three main air currents: the polar easterlies, the westerlies, and the trade winds.
The polar easterlies are located near the poles and blow from the east towards the west. Due to the Coriolis effect, these winds are deflected to the right, resulting in a clockwise flow in the Northern Hemisphere and a counter-clockwise flow in the Southern Hemisphere.
The westerlies are located in the middle latitudes and blow from the west towards the east. Due to the Coriolis effect, these winds are deflected to the right, resulting in a clockwise flow in the Southern Hemisphere and a counter-clockwise flow in the Northern Hemisphere.
The trade winds are located near the equator and blow from the east towards the west. Due to the Coriolis effect, these winds are deflected to the right, resulting in a clockwise flow in the Northern Hemisphere and a counter-clockwise flow in the Southern Hemisphere.
In conclusion, the Coriolis effect influences the direction of the wind belts by causing moving objects, including air currents, to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This effect is important for understanding the patterns of global air circulation and for explaining the direction and flow of winds at different latitudes on the Earth's surface.
Explanation:
there is no plagerisiam at all
Which term describes the situation, for x‑linked genes, in human and drosophila males who have only one x chromosome?
a. heterozygous b. hemizygous homozygous c. homogametic d. dioecious
The term that describes the situation for X‑linked genes, in human and drosophila males who have only one X chromosome is hemizygous.
Thus, the correct option is B.
In humаns аnd other mаmmаls, biologicаl sex is determined by а pаir of sex chromosomes: XY in mаles аnd XX in femаles. Genes on the X chromosome аre sаid to be X-linked. X-linked genes hаve distinctive inheritаnce pаtterns becаuse they аre present in different numbers in femаles (XX) аnd mаles (XY).
Hemizygous describes аn individuаl who hаs only one member of а chromosome pаir or chromosome segment rаther thаn the usuаl two. Hemizygosity is often used to describe X-linked genes in mаles who hаve only one X chromosome. This term is sometimes used in somаtic cell genetics where cаncer cell lines аre often hemizygous for certаin аlleles or chromosomаl regions.
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if a cell is defective in some way, the cell will try to fix it. if repair cannot be done, what happens to the cell?
A cell may self-destruct if there is a DNA mistake that cannot be corrected (apoptosis ). Apoptosis is a process that occurs frequently throughout life to help your body get rid off cells are no longer functional
What are the many types of DNA repair?At least five primary DNA repair mechanisms, including nucleotide excision trying to repair (BER), nucleotide excision repair work (NER), mismatch repair process (MMR), homology - directed (HR), as well as non-homologous ends joining (NHEJ), are active at different times during the cell cycle and allow cells to repair DNA damage.
What occurs when DNA is harmed?Normal cell replication and apoptosis rates can both be impacted by DNA damage, often known as "cellular senescence" or "programmed cell death." Alternately, harm to genetic material may cause cellular dysfunction, cell death, or the development of cancerous cells from normally healthy cells.
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explain why single-tailed amphiphiles tend to form micelles whereas two-tailed amphiphiles tend to form bilayers.
Single-tailed amphiphiles form micelles due to the hydrophobic end of the molecule being attracted to other molecules, which causes the molecules to clump together in a sphere. Two-tail amphiphiles have a hydrophobic and hydrophilic end that are attracted to each other, forming a bilayer.
What are single-tailed amphiphiles?Single-tailed amphiphiles are molecules that have both a hydrophilic (loving water) and a hydrophobic (disliking water) end. The hydrophobic end is often composed of a lengthy hydrocarbon chain, whereas the hydrophilic end is composed of a polar group such as an acid or basic. Because of their capacity to interact with both polar and non-polar surfaces, single-tailed amphiphiles are extensively utilised as surfactants and detergents.
Because the hydrophobic end of the molecule is attracted to the hydrophobic end of other molecules, the molecules cluster together in a sphere, single-tailed amphiphiles prefer to form micelles. Two-tailed amphiphiles, on the other hand, contain hydrophobic and hydrophilic ends that attract each other, leading the molecules to form a flat, layered shape. A bilayer is the name given to this structure.
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6. the fossils of a rare flying animal are found in a layer rock. which information can be gathered by studying the fossil?
The information that can be gathered by studying the fossil is where the animal died.
Fossils are preserved remain(s), impression, or trace of any once-living thing that was living from a past geological age. They are mostly found in the form of bones, shells, exoskeletons, and stone imprints; but some objects are also preserved in petrified wood, amber, or even DNA remnants.
The major information that can be gathered from a fossil is the place where the organism died. With the current technology and techniques, you can also estimate the age of the fossil by measuring the age of the rock where it is found.
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Which front brings several days of steady rain or snow into an area
cold front is a front that brings many days of consistent rain or snow to a region.
A cold front is a line dividing a warm air mass from a cold air mass. When a cold front enters a region, the weather abruptly changes, with cooler air replacing the warmer air. Since the cooler air can store less moisture than warmer air, the extra moisture condenses into rain or snow, which can last for several days.
Cold fronts can bring persistent precipitation as well as brisk winds, sharp reductions in temperature, and fluctuations in barometric pressure. A cold front's passage can frequently indicate the change from balmy, pleasant weather to more wintry conditions. It frequently develops near the leading edge of an extratropical cyclone's cold air advection pattern, also referred to as the cyclone's dry "conveyor belt" flow, which is to the west in the Northern Hemisphere and to the east in the Southern Hemisphere. Temperatures on either side of the barrier can vary by more than 30 °C (54 °F). Rain can fall along the boundary if there is enough moisture in the air. A thin line of thunderstorms may develop along the frontal zone if there is substantial instability along the boundary.
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Why does disrupting the Calvin cycle impact the light reactions of photosynthesis? A. The Calvin cycle regenerates NADP+. B. The Calvin cycle regenerates ribulose-1,5-bisphosphate. C. The Calvin cycle fixes carbon dioxide. D. The Calvin cycle regenerates ADP. E. The Calvin cycle regenerates ATP.
The correct option is A; The Calvin cycle regenerates NADP+. As water is broken down, light-dependent reactions produce oxygen as a byproduct.
The chemical energy derived from light-dependent reactions drives both the capture of carbon in carbon dioxide molecules and the subsequent assembly of sugar molecules in the Calvin cycle, which occurs in the stroma. During the Calvin cycle, ADP, iP, and NADP are regenerated, and they are required for the production of ATP and NADPH during the light reaction. The Calvin cycle is required for light reactions; ATP and NADPH cannot be produced without it. As a result, the two photosynthesis processes are linked.
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one type of rna editing converts cs to us, thereby affecting what amino acid is translated by some codons. how many codons in the genetic code would not be affected by such a change?
Only codons that include the letter C might be impacted. The information contained in a gene's DNA is transferred to an analogous molecule called RNA (ribonucleic acid) in the cell nucleus during transcription.
Frameshift mutations were caused by the insertion or deletion of one or two nucleotides. DNA is a flexible and dynamic molecule. As a result, due to a process known as mutation, the nucleotide sequences found therein are liable to alter. A particular mutation may prove harmless, beneficial, or even harmful depending on how it changes the genetic structure of an organism. The protein's functionality could be affected by the amino acid alteration.
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based on information in this course, which statement accurately states anthropologists' understanding of primate culture and language?
Correct statement which accurately states anthropologists understanding is b)Non-human primates show some elements of culture and language and may be capable of full culture and language, but they have not developed this ability in the wild. So, correct option is b.
Anthropologists concentrate on the qualities of over a wide span of time human networks through different methods. In doing as such, they research and depict how various people groups of our reality lived since the beginning of time.
Anthropologists mean to study and present their human subjects in an unmistakable and unprejudiced manner. They endeavor to accomplish this by noticing subjects in their neighborhood climate. Anthropologists then, at that point, depict collaborations and customs, an interaction known as ethnography. By partaking in the regular daily existence of their subjects, anthropologists can more readily comprehend and make sense of the reason for neighborhood establishments, culture, and practices. This interaction is known as member perception.
As anthropologists concentrate on social orders and societies unique in relation to their own, they should assess their understandings to ensure they aren't one-sided. This inclination is known as ethnocentrism, or the propensity for survey all gatherings as second rate compared to another, generally their own, social gathering.
Hence, correct option is b.
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(Complete question) is:
Based on information in this course, which statement accurately states anthropologists' understanding of primate culture and language?
a) Non-human primates show some elements of culture and language but are not capable of full culture and language.
b)Non-human primates show some elements of culture and language and may be capable of full culture and language, but they have not developed this ability in the wild.
c)Infant non-human primates are capable of culture and language, but they lose this ability as they mature.
d) Non-human primates do not have any of the qualities associated with culture and language.
What is the proper statement that describes how thyroxine and/or TRH levels are maintained? a. TSH inhibits the secretion of thyroxine from the thyroid gland. b. TSH-releasing hormone (TRH) inhibits the secretion of thyroxine by the thyroid gland. c. Thyroxine stimulates the pituitary to secrete thyroid-stimulating hormone (TSH). d. Thyroxine and TSH inhibit the secretion of TSH-releasing hormone (TRH)
The proper statement that describes how thyroxine and/or TRH levels are maintained is: D. Thyroxine and TSH inhibit the secretion of TSH-releasing hormone (TRH).
In general , the hypothalamus is responsible for the production of TRH, which is produced by the help of anterior pituitary gland that also mediate the secretion of TSH. When the TSH is secreted it will work on the thyroid gland and assists production of thyroxine (T4) and triiodothyronine (T3).
On the other hand the negative feed back loop gets activated when the levels of T4 and T3 is increased in the blood , they inhibit the secretion of TRH and TSH . This negative feed back loop is important in the proper maintenance of levels of T4 and T3 in the blood.
Hence, D is the correct option
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here are four electron transport carriers in the etc of eukaryotes. which pair is correctly matched?
Four electron transporters that are present in eukaryotic cells are listed below. Complex III and cytochrome BC1 are the appropriate partners.
Eukaryotic cells: what are they?Every multicellular organism, including animals, plants, and humans, as well as some unicellular organisms (organisms with only one cell), such as protozoa, is composed of eukaryotic cells, which are cells that have membrane-bound structures. Organelles, which are specialized cellular subunits that perform certain biological tasks, are numerous membrane-bound structures found in eukaryotic cells.
The nuclear membrane, which is also known as the nuclear envelope, surrounds the nucleus and safeguards the genetic material kept there. Nuclear pores, which only permit specific compounds to pass through, are present in the nuclear membrane. The endoplasmic reticulum is a different membrane-bound organelle (ER).
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assuming the population size is stable, such that r0 is a good index of fitness, what type of selection is acting on this food preference gene?
The type of selection acting on this food preference gene is directional selection. Directional selection occurs when the extreme value of a trait is favored, leading to a shift in the distribution of the trait in a particular direction.
In the case of the food preference gene, if a certain preference is more advantageous and provides a higher reproductive success (fitness), individuals with that preference will be more likely to pass on their genes to the next generation, causing the frequency of that preference to increase.
Conversely, if a different preference is less advantageous, the frequency of that preference will decrease. Over time, this results in a shift in the distribution of food preferences in a particular direction. This type of selection can lead to the evolution of new species if the preference becomes so distinct that individuals with different preferences can no longer interbreed and produce viable offspring.
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comparing plesiosauria and pterosauria, which of the two groups was the most impacted by this extinction event? in other words, which one lost the most genera in this mid-cretaceous extinction event? (remember to read the y-axis!)
Comparing Plesiosauria and Pterosauria, Pterosauria lost the most genera in the mid-Cretaceous extinction event. The Y-axis on the chart shows the number of genera lost, with Pterosauria losing more genera than Plesiosauria.
Plesiosauria is an extinct group of aquatic reptiles that lived during the Mesozoic Era. These animals had long necks, four flippers, and a large tail. They had a streamlined body and small heads, and were well-suited for life in the oceans. Pterosauria is an extinct group of flying reptiles that lived during the Mesozoic Era. These animals had wings that were made of skin and supported by a network of long, slender bones. They had long necks, short tails, and heads that were larger than their bodies. Pterosaurs had strong jaws and sharp teeth, and were well-suited for life in the skies.Learn more about plesiosauria and pterosauria:
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