Answer:
the lower esophageal sphincter
Explanation:
Which of these is a characteristic of prokaryotes?
They have a nucleus.
They are always unicellular.
They are larger than eukaryotes.
They have membrane-bound organelles.
Answer:
They are always unicellular
Explanation:
The other options are false:
Prokaryotes do not have nucleus
Eukaryotes are larger than Prokaryotes
They do not contain membrane bound organelles
Answer:
It is B.
I looked everything up and the second option was the only thing that made sense.
Examples that show between species DNA show , and give evidence of evolution.
Answer:
Evidence of evolution can be identified through fossil records, testimonial fossils, biography, anatomy, and embryology. An example of a species DNA is the peppered moth, whereby light-colored moths are eaten by birds, unlike the dark colored ones which seem to camouflage on dark backgrounds. Evolution changes the genetic makeup of a population over time and may happen on a large scale or small scale basis which affects either one of a few genes over a short period.
Answer:
1) similarities
2) descent from a common ancestor
3)A,C,D
Explanation:
doing this now!
some Engineers are creating models of several unicellular organisms. which of these would all the models have in common?
~They would all be made of many cells with cell walls?
~They would all have parts to help them move around their environment?
~They would all have chloroplasts to trap sunlight and create their own food?
~They would all have one cell with smaller parts that do different jobs within the cell?
Answer:~They would all have one cell with smaller parts that do different jobs within the cell?
Explanation:
A bog is a wetland that...
A) is entirely covered with thick floating mats of vegetation
B) has shallow water and tall grass like plants
C) has shallow water and Woody shrubs and trees
D) has mostly salt water
(please no guesing)
Answer: (A
Explanation:
Answer:
A) is entirely covered with thick floating mats of vegetation
Explanation:
The bog vegetation, mostly sphagnum moss anchored by sedges (such as Carex lasiocarpa), forms a floating mat approximately half a meter thick on the surface of the water or on top of very wet peat.
Draw the structure of DNA aand write a short note about it.
Answer:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Explanation:
i really hope this helps
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In which way is primary succession similar to secondary succession?
Both occur where life already exists.
Both are gradual.
Both occur where no life exists.
Both involve creating soil.
Answer:
The answer is b and it is correct
Explanation:
took the test.
Primary succession similar to secondary succession as both are gradual. So, the correct option is B.
What are Primary and secondary succession?Both primary succession and secondary succession entail a long-term, slow process of ecological change. Primary succession refers to the emergence of an ecosystem in an environment devoid of life, such as bare rock or sand dunes.
The rebuilding of an ecosystem in an area where life once flourished but was disturbed or eliminated, as in the aftermath of a fire or human disturbance, is known as secondary succession.
Both forms of succession entail a gradual process of organism colonization, with early successional species fostering the establishment of subsequent successional species. While the process of primary succession includes the production of soil, secondary succession does not share this characteristic.
Therefore, the correct option is B.
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Why do you think it is important that our bodies can respond to stimuli around us?
Answer: it is important that our bodies can respond to stimuli around us because without it, you wouldn’t be able to detect and respond to changes in their internal and external environment. Cells called receptors, which detect stimuli (changes in the environment). The stimuli is part of our control system, it is very vital.
Which subatomie particle does
the RED(+) circle represent?
electron
preten
neutren
Answer:
Proton
Explanation:
Answer: proton
Explanation:
wind energy takes _____
energy and turns it into _____ energy
heat; mechanical
mechanical; electical
electrical; mechanical
heat; electrical
Answer:
3) mechanical; electrical
Explanation:
Wind energy takes mechanical energy and turns it into electrical energy
Why do you suppose there is that 42-mile difference?
Why is it further around the equator than around in a
North-South direction?
*this is an open ended question * PLEASE ANSWER
Answer:
The earth rotates on the axis that passes through the north and the south of the planet and is of 24-hour duration. Similar to that of the rotation of the moon which is sideral, this rotation is in the anticlockwise direction. And this originated by the angular movement of the clouds of the dust and gases that have coalesced to for the solar system.
Thats answer is something else i think since your going up its much more faster then going around equator sin earth rotates on its axis
\Explanation:
Answer:
the earth rotates on a angle.
Explanation:
What are two ways that antibodies protect the body from disease?
1.They produce white blood cells.
2.They recognize specific pathogens.
3.They take dead cells out of the body.
4.They bind to specific pathogens.
Answer:
1.They produce white blood cells.
2.They recognize specific pathogens.
Antibodies protect the diseases by two ways by recognizing specific pathogen and by producing WBCs.
what are antibodies?Antibody, also known as immunoglobulin, is a protective protein generated by the immune system in reaction to the presence of an antigen, which is a foreign material. Antibodies are proteins that identify antigens and latch on to them in order to eliminate them from the body.Antibodies also produce white blood cells.They recognize specific pathogens.Hence the correct option is 1, 2.
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Chemical reactions move at a different speeds when a chemical reaction is moving at a slow speed what can be done to speed up the reaction
Describe classification as a work in progress
Answer:
quick me
Explanation:
Describe classification as a work in progress
Since it reflects the most current understanding of how living things are related, new discoveries can change the way living things are classified also something is always changing
En un juicio, se solicita una prueba de paternidad para esclarecer un conflicto donde dos hombres indican ser padres de dos adolescentes (un niño y una niña). Uno de los posibles padres no es hemofílico, mientras que el otro si que presenta esta enfermedad. Por otro lado, ni la mujer ni los hijos tiene hemofilia, aunque si que se ha detectado que la hija es portadora de esta enfermedad.
Answer:
The father is the hemophilic person
Explanation:
Hemophilia is a recessive genetic disorder that is linked to the X chromosome. This disease is associated with a congenital blood coagulation disorder.
Since hemophilia is linked to the X chromosome, females can be both heterozygous (mosaic expressing both alleles) and homozygous, while males always have hemophilia.
does a solar or lunar eclipse have a bigger impact on earth? (15 points)!
Answer:
solar eclipse
Explanation: because the are harmful to view while lunar are safe to view without any eye gear! :)
Evan:the sun ismore important to the earth yes but it's because when eclipoes happen animals and plants have their cycles
how mule is produced?
Answer : horse mare and a donkey jack hybrid of both
Explanation:
A mutation can cause a defect in human hemoglobin. Which would result in this type of mutation?
choices ; decreased ability to carry oxygen
development of cancerous tumors
inability to break down sugar
development of bacterial infections
PLS ANSWER ITS A TESTT !!!
Answer:
decreased ability to carry oxygen
Explanation:
A mutation can cause a defect in human hemoglobin, Which would result in - decreased ability to carry oxygen.
Hemoglobin is an iron-rich protein found in red blood cells that gives red blood cells their unique red color. Hemoglobin is the protein responsible for carrying oxygen in red blood cells.
A mutation in the hemoglobin gene changes the hemoglobin protein in a way that causes sickle cell anemia.Sickle cell disease is caused by mutations in the beta-globin (HBB) geneThis mutation leads to the production of an abnormal version of a subunit of hemoglobinThis mutated version has decreased ability to carry oxygenThus, a mutation can cause a defect in human hemoglobin, Which would result in - decreased ability to carry oxygen.
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In a rainforest what might be a limiting factor for the toucan population
A) lots of sunshine
B) deforestation
C) plenty of rain
D) fertile soil
Which of the statements below is a water quality conservation method used in the United States?
Which nitrogen base sequence is the partner of C–A–T–C–G–A?
Answer:
The Answer is G-T-A-G-C-T
Explanation:
Answer:
G–T–A–G–C–T
(b)
how is radioactive dating important for providing evidence for evolution
Radioactive dating is important at it helps in providing evidence for evolution because it tells you when the animal that made a fossil was alive. The correct option is D.
What are the radioactive dating?Radioactive dating is a technique for dating rocks and minerals that makes use of radioactive isotopes.
This method is useful for igneous and metamorphic rocks that cannot be dated using the sedimentary stratigraphic correlation method. There are over 300 naturally occurring isotopes known.
Scientists use slow-decaying elements such as uranium and potassium to date igneous rock.
They can determine the age of the sedimentary layer in which the fossils occur by dating the surrounding layers. This is known as "bracketing" the age of the sedimentary layer within which the fossils occur.
Thus, the correct option is D.
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Water lilies are very well adapted to their habitats. They live and grow on the edges of shallow water, lakes, or ponds. They are rooted under water, but their leaves are afloat so they can get what
Answer:
Explanation:
The water lilies have broad, flat floating leaves that let them gather the maximum amount of sunlight since this does not permeate the water's surface very deeply. The also possess stomata in the upper epidermis to enable them absorb carbondioxide.
A fetus has been developing for three months . What will happen next? A. Vocal cords develop . B. Hands and feet form . C. Blood starts pumping . D. External sex organs form .
Answer:
D. External sex organs form .
Explanation:
There are three stages in fetal development that include germinal, embryonic, and fetal period.
Three months means, it will be the 12 week of the fetal development and called fetal period. At the end of this stage, baby's external genitalia or sex organs will start developing such as penis in male and vagina in female.
Hence, the correct option is D.
Answer:
Vocal cords develop.
Explanation:
What is another name for a flowering plant?
bryophyte
gymnosperm
angiosperm
polypodiophyte
Answer:
angiosperm is its other name.
What is the difference between the predator-prey relationship and the
parasite-host relationship
Answer: In a predator prey relationship, the predator kills and eats the prey. In a parasite/ host relationship, the parisite is feeding off the host, without killing it. If the host dies, the parasite will as well.
Explanation:
I hope that makes sense XD good luck
Fossil fuels have been used for years as a source of energy. Even though there are many negative issues associated with the use of fossil fuels, they continue tobeused to a great extent. This is most likely because
Answer:
These fuels are very efficient, it means that fossil fuel sources (oil, natural gas and coal) have high energy conversion rates, thereby they enable to generate important amounts of energy.
Explanation:
It has been shown that the overall efficiency of the conversion of fossil fuels to electricity is approximately 40%, while 60% of the energy produced is wasted during the process of combustion. However, it is important to note that the efficiency of renewable energies (i.e., geothermal, solar, hydroelectricity, wind and biomass) have been considerably increased in the last years.
How many times greater is the concentration of DDT at the highest trophic level than at the lowest trophic level?
Answer:
Biomagnification (or bioaccumulation, or biological amplification) is the increase in the
concentration of persistent chemicals (such as pesticides) in ecosystems as they pass
up the levels of a food chain or food web.
100 000X more concentrated
What changes would you expect to take place in the make-up of urine produced on a hot summer's day after playing sports for an
hour?
a) A
b) B
c) C
d) D
HELP!
in both plants and animals food molecules are broken down and CO2 is released by what
Answer:
Cellular respiration is a chemical reaction that releases energy from food. Animals, plants and fungi all carry out respiration. Respiration produces carbon dioxide. In respiration, oxygen is used to break apart food molecules.
Explanation:
Which of the following is the largest?
A. the Universe
B. the Solar System
c. the Milky Way Galaxy
D. the Sun
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