Answer:
Explanation:
This is because rocks formed at the mid ocean ridges are young rocks i.e the mid ridges is use to date young rocks. Rocks farther from the mid ridges are older than rocks near the mid ridges and this can also be as a result of the oceanic crust near the mid ridge are younger than the oceanic crust far away from the mid ridge.
What are the 5 steps of Self- Pollination in flowers?
Answer:
Plants avoid self-pollination by a whole range of different mechanisms. One of them is kiwifruit, and what kiwifruit does is it has its male and female flowers on different plants. So a female plant can't actually pollinate itself at all – it's got to get pollen from somewhere else.
Explanation:
i hope this helps
5 steps of Self- Pollination in flowers :-
Anthers elevate and touch stigma, some pollen left on the stigmaWithin 2 to 3 min, pollen on stigma start germinating. To grow pollen tune towards egg cell.The pollen tubes reach the ovule. Fertilization take place. There is double fertilization in plants.Fertilized egg begins cell division to develop into embryo.What is double fertilization?In higher plants double fertilization take place.Here egg is fertilized first. Then polar nuclei in the embryo sac fertilized.To know more about double fertilization here
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The main site for photosynthesis in plants is the
OA.
roots.
OB.
flowers
C.
leaves.
OD
stems.
Answer:
leaves
Explanation:
The main site for photosynthesis in plants are the leaves. Leaves are the main spot of a plant where you can see photosynthesis occur.
Does photosynthesis release energy or capture and store energy?
Answer:
capture and store
Explanation:
through photosynthesis, a plant is gathering energy and storing it and turning it into food
Assess which questions are relevant to ask about the role of meiosis to form gametes in sexually reproducing individuals. Select all
that apply.
A. Does meiosis separate homologues chromosomes during the nuclear division
B. does meiosis create haploid cells that later join in fertilization to form haploid offspring
C. does meiosis create haploid cells that later join in fertilization to form diploid offspring
D. does meiosis create diploid cells that later join in fertilization to form diploid offspring
E. does meiosis separate sister chromatids so that each gamete only has one version of each chromosome
Answer:
A,C<and E
Explanation:
I did this on my USATestPrep for my 9th grade honors bio class nd i got it correct. 12/13/20
Regarding the meiosis, the questions that are mentioned in options A, C, and E should be asked. Sister chromatid and homologous chromosomes separation occur during meiosis, and the gametes form the diploid zygote.
What is meiosis?
Meiosis is a process that involves multiple sub phases, such as meiosis I and meiosis II. The meiosis has prophase I ( leptotene, zygotene, pachytene, diplotene, and diakinesis), metaphase I, anaphase I, ,telophase I, and cytokinesis. Except for the five stages of prophase I, meiosis II includes all of these phases.
In meiosis I, the homologous chromosomes cross over, and recombination takes place in prophase I. In anaphase I and telophase I, the homologous chromosome separates, while in meiosis II, sister chromatids separate. At the end of the meiosis, four haploid cells are formed.
hence Regarding the meiosis, the questions that are mentioned in options A, C, and E should be asked. Sister chromatid and homologous chromosomes separation occur during meiosis, and the gametes form the diploid zygote.
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Which of these conditions is least likely to cause a species to become extinct due to environmental changes?
A.Specific food preferences
B.More competition for food
C.More genetic variation
D.Less genetic variation
I will give brainly for the right answer.
Answer:
B. More competition for food
Which best describes the cycle that ensures fresh water, which is vital for carrying out metabolic processes, is available?
Answer: B. evaporation, condensation, precipitation
Explanation:
The cycle that ensures that fresh water is available is called the Hydrological cycle and it involves several key processes.
As it is a cycle, none of the processes can be considered first but if any could, it would be evaporation. This is when water on the surface is heated and becomes water vapor (gas) and rises towards the atmosphere.
Condensation occurs as the water vapor rises because the further up you go, the colder it gets. These water vapor particles will thus condense and clump together to form clouds.
These clouds keep getting larger until they are too heavy to be carried by the atmosphere in which case they fall to the ground as rain the process known as precipitation.
Which of these best describes Earth’s core?
A. Most dense layer, consists of the outer and inner parts.
B. Thinnest under the oceans and thickest under continents.
C. Middle layers, density increases with depth and pressure increases.
D. Least dense layer overall, consists of two layers of different thickness.
Answer: A.
Explanation:
There core, or inner layer, is the most dense due to its magnetic pole, not to mention, the core is comprised of multiple molten materials, heated so hot, tht it practically exist between two states of matter simultaneously.
Answer:
A. Most dense layer, consists of the outer and inner parts
The part of the plant where you would find the most cellulose is ? ( dont say cell walls , im looking where at
a-leaves
b-roots
c-branch
d-stem
Answer:
d-stem
Explanation:
Cellulose is most abundant in meristems tissues which are present in the tips of the root and stem and in the cambium between the xylem and the phloem and under the epidermis of the trees and shrubs, therefore it is abundant in the stems.
Meristems are also found in other parts of the plant but it is mostly abundant in the stems.
Meristems are the cells that are responsible for the cell growth and elongation.
When a red flowered pea plant was crossed with a white flowered pea plant, it was found that all plants in the F1generation carried only red flowers. If these plants are self crossed, i) Find the genotypic ratio that we can expect in F2 generation ii) What is the phenotype and genotype of F1 generation. Draw Punnett square for F2
Answer:
The correct answer is -
i) genotype of F2 - 1:2:1 = dominant:heterozygous:recessive
ii) genotype of F1 - all heterozygous dominant
phenotype - all red
Explanation:
In the cross of red- flowered plant and white flowered plant the offspring produces red flowers that s only possible if the parent red flower plant has both alleles in dominant condition.
For the F1 the gametes will be R, R and r, r
from the Punnett square, we can see all the offspring are heterozygous (Rr) in genotype and red in phenotype
For F2 the gametes will be - R, r, and R, r
From the punnet square, the genotype we get is 1:2:1 = dominant:heterozygous:recessive
Which of the following organisms in the Gulf of Mexico experiences an immediate increase of population due to fertilizer runoff into the
Mississippi River?
bacteria
phytoplankton
dolphins
fish
phytoplankton.Because it is the organism which is top little
Answer: The correct answer is phytoplankton
Explanation: This answer has been confirmed correct.
The excess of nutrients in the water creates phytoplankton blooms.
how can hunters and wildlife managers work together to maintain ecosystems in park and preserves
Answer:
Filling out questionnaires.
Participating in surveys.
Stopping at hunter check stations.
Providing samples from harvested animals.
Funding wildlife management through license fees.
Stuart is listing the changes to matter and energy that occur during the process of photosynthesis. Which of these examples should he include in his list?
A. nuclear changes that convert hydrogen and oxygen into carbon
B. chemical changes that convert carbohydrates into smaller molecules
C. changes that convert light energy into chemical energy stored in carbohydrates
D. changes that convert chemical energy into heat and light
Answer:
C. Changes that convert light energy into chemical energy stored in carbohydrates
Explanation:
Just had this question on a bio assignment.
Photosynthesis occurs in plants containing chlorophyll in which the solar energy entrapped is converted into the chemical fuel needed for energy generation.
The correct answer is:
Option C. Changes that convert light energy into chemical energy stored in carbohydrates.
This can be explained as:
The leaves of plants capture the rays and with the help of water and carbon dioxide create glucose and oxygen.The nourishment or the nutrient includes carbohydrates that get broken in the presence of solar energy and experience chemical changes.Therefore, during photosynthesis light energy is transformed into chemical power.
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What is the chemical reaction in the equation NaCl (s) → Na + (aq) + Cl - (aq)
Answer:
2 Na + Cl 2 → 2 NaCl The physical states of reactants and products are included where necessary. The symbols used are: ( s ) for solid, ( l ) for liquid, ( g ) for gas, and ( aq ) for aqueous (water) solutions.In the case of sodium chloride formation, the equation is modified accordingly.
Explanation:
What is the best explanation for the faster times of the group fed a pre-race meal of bread with bananas and honey
Answer:
Bread, bananas and honey have carbohydrates.
Explanation:
The group fed a pre-race meal of bread with bananas and honey because bread, bananas and honey have high amount of carbohydrates which give quick energy to the athlete. This carbohydrate is a macromolecule which is quickly converted into micromolecule i. e. glucose that is absorbed by the cell and the mitochondria of the cell produces energy in the form of ATP that is used by the athlete in running.
A 1500 kg truck accelerates from a stop sign at 5.4
m/s2. What is the force in Newtons that the truck
experiences?
(Show your work and use the right unit of measure!)
Answer:
dat bad
Explanation:
boi
Lipase is best classified as which type of protein?
I really need help :(
Answer:
does the speed of movement depend on the shape of wood
Explanation:
because she has a stopwatch and different shapes of wood
Based on the graph, what does the point (1, 300) represent?
Answer:
1,3
Explanation:
mark brainiest
Which of the following explains why a breeding-soundness examination is performed?
to determine the age of the animal
to determine what traits will be passed on to offspring
to determine what genes were inherited from parents
to determine the likelihood of fertility
Answer:b
Explanation:
The statement to determine what traits will be passed on to offspring explains the breeding-soundness examination is performed.
What do you mean by breeding soundness examination?The breeding soundness examination (BSE) involves a complete and systematic evaluation of the reproductive potential of a given male, including mating ability and libido, general physical examination.
The breeding soundness exam (BSE) is much more than a “semen test.” It consists of a physical exam that should include examination of the eyes, feet and legs, teeth (if an older bull), and general overall condition.
By following out breeding system i.e., crossbreeding, selective breeding and grading up according to the need, results in improvement in production performance of the crossbred.
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how can we tell that environment is actually changed in the past
Answer:
Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.
1) The planet's average surface temperature has risen about 2.05 degrees Fahrenheit (1.14 degrees Celsius) since the late 19th century, a change driven largely by increased carbon dioxide and other human-made emissions into the atmosphere. Most of the warming occurred in the past 40 years, with the six warmest years on record taking place since 2014. Not only was 2016 the warmest year on record, but eight months out of that year — from January through September, with the exception of June — were the warmest on record for those respective months.
2) The ocean has absorbed much of this increased heat, with the top 100 meters (about 328 feet) of ocean showing warming of more than 0.6 degrees Fahrenheit (0.33 degrees Celsius) since 1969. Earth stores 90% of the extra energy in the ocean.
3) The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost an average of 279 billion tons of ice per year between 1993 and 2019, while Antarctica lost about 148 billion tons of ice per year.
4) Glaciers are retreating almost everywhere around the world — including in the Alps, Himalayas, Andes, Rockies, Alaska, and Africa.
5 )Satellite observations reveal that the amount of spring snow cover in the Northern Hemisphere has decreased over the past five decades and the snow is melting earlier.
6) Global sea level rose about 8 inches (20 centimeters) in the last century. The rate in the last two decades, however, is nearly double that of the last century and accelerating slightly every year
7) Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades
8) The number of record high temperature events in the United States has been increasing, while the number of record low temperature events has been decreasing, since 1950. The U.S. has also witnessed increasing numbers of intense rainfall events.
9) Since the beginning of the Industrial Revolution, the acidity of surface ocean waters has increased by about 30%.13,14 This increase is the result of humans emitting more carbon dioxide into the atmosphere and hence more being absorbed into the ocean. The ocean has absorbed between 20% and 30% of total anthropogenic carbon dioxide emissions in recent decades (7.2 to 10.8 billion metric tons per year).
Shorter version: 1) Global Temperature Rise
2) Warming Ocean
3) Shrinking Ice Sheets
4) Glacial Retreat
5) Decreased Snow Cover
6) Sea Level Rise
7) Declining Arctic Sea Ice
8) Extreme Events
9) Ocean Acidification
Which bar graph best represents the equatorial diameters of the eight planets of our solar system?
Answer: The First one/ A /Top Left corner
Explanation:
Equatorial distance shows the size of a planet. The larger the distance, the larger the planet.
Option A puts Jupiter as having the largest distance which is correct as Jupiter is the largest planet and is followed by Saturn and then Uranus and Neptune in that order.
Option A also shows Earth as being larger than Mars, Venus and Mercury which is accurate as well.
Option A is the best choice.
Please helpppppppppppppppp
Answer:
c
Explanation:
All 12 body systems interact to maintain ________________.
Answer:
homeostasis!
Explanation:
Answer:
The body systems constantly interact with each other to maintain homeostasis.
Which organic compound is NOT correctly paired with its monomer?
A) Carbohydrate --- monosaccharide
B) Lipid - Dextrose
C) Protein - Amino Acid
D) Nucleic Acid - Nucleotide
What are three types of sedimentary rocks? How do they form?
Pls give a legit answer thats not off of google for brainly, thank you.
Answer:
Three types of sedimentary rocks are, clastic, organic (biological), and chemical. Clastic rocks are formed by made up of pieces (clasts) of pre-existing rocks. Organic rocks are formed by accumulation and lithification of organic debris, such as leaves, roots, and other plant or animal material. Last but not least chemical rocks are formed by precipitation of minerals from water. Precipitation is when dissolved materials come out of water.
elements that has atoms of more than one molecular mass
The main function of this system is to
A. Recycle water
B. Transport Oxygen
C Produe hormones
D. Remove waste
Answer:
remove waste
Explanation:
Answer:
D. main function is to remove waste
What is the pythagorean theorem
Answer:
The Pythagorean theorem states that in any right triangle, the square of the length of the hypotenuse equals the sum of the squares of the lengths of the legs of the right triangle
Explanation:
Answer:
u see this is how the Pythagorean theorem works a^2 + b^2 = c^ i hope this helps have a great day bye please mark as brainliest :D
Explanation:
How did the earliest ancestors, microorganisms, eat?.
Answer:
Most of the earliest microorganisms were prokaryotes so it would make sense for them to go through photosynthesis to create glucose for energy. They also could have gotten energy from salt water.
Explanation:
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Explain why there are five different climate zones on Mount Kilimanjaro
Please answer in a full paragraph with reasons to support your answer
Answer:
Mount Kilimanjaro is made up of five distinct climate zones. They are as follows; Cultivation, Forest, Heather-Moorland, Alpine Desert, and Summit climate zones. This region of the mountain receives the greatest annual rainfall. It also has many rivers formed by glacier run-off from the top of Kilimanjaro. This zone is made up of farmland and small Chagga villages. The rainforest quickly gives way to the Heather zone. The temperatures here are erratic. The daytime temperature can soar above 100° F (40oC) yet drop below freezing (32° For 0° C) at night. These temperatures combined with less rain, gusting winds, giant heathers, wild grasses, and a rocky trail replaces the rainforest very quickly. Some of the heather shrubs can grow to over 30 ft. high. The rainforest circles a majority of Mount Kilimanjaro. However, most of the rain on the mountain falls on the south and the east side. The forest is much thicker here than to the north on the Kenyan side of the mountain. The highland desert zone region of the mountain is a strange place, truly deserving the title of Desert. The annual rainfall is less than 8 inches a year and what plant life exists at this altitude has to put up with the oppressive sun and sub-zero temperatures—all in the same day. This area also shows off its violent past with fields of volcanic rock of all shapes and sizes. The artic zones lower section of this section is made up of loose dirt and gravel known as scree. Scree is quite difficult to climb. That is part of the reason the summit attempt begins at night when the evening dew has settled and frozen. This allows the scree to knit together making it a more stable path.