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Vitek1552 [10]
3 years ago
11

Which marine ecosystem has the fewest available nutrients and the lowest productivity? A) estuaries B) open ocean C) coral reefs

D) continental shelf
Biology
1 answer:
AVprozaik [17]3 years ago
7 0

Answer:

B) open ocean

Explanation:

The open ocean ecosystems have the least available nutrients and lowest productivity. The limiting factors in an marine habitat are light and nutrients. Coastal ecosystems, estuaries and coral reefs have much higher nutrient availability and high productivity because plants are in shallow water and receive plenty of sunlight.

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Recall that a small amount of releasing factor from the hypothalamus can cause the adrenal cortex to secrete a much greater amou
Andreyy89

Answer:

The correct answer is- hormone signal amplification

Explanation:

The signals that are received by the cell can be amplified in the cell which results in the production of more than one molecule of the product. There is a signal pathway in every cell and the longer the signal pathway the more amplification chances are there.

For example, one membrane receptor is able to produce 10 secondary messengers and each secondary messenger generates 10 mRNA transcript so here the signal amplified by 1000 folds.

So in this question, it is seen that a small amount of releasing factor causing the release of a much greater amount of cortisol which shows the example of hormone signal amplification.

3 0
4 years ago
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Define the following terms:
Tatiana [17]

Answer:

1)  OSCILLATING -  group of communicating modules

2) Tympanometry is a test that is used to assess the state of the middle ear and eardrum mobility

3) Orthoptics is a specialty affiliated with the eyecare profession that main focus is on strabism (wandering eye)

4) Electroretinography (ERG) is an eye test that measures retinal activity

5) Aphakia is the loss of the eye's lens due to surgical intervention

6) Cornea - front part of the eye

Explanation:

1) Oscillating  -  In many complex cellular processes, oscillations play a key role. They could appear as a group of communicating modules in the cell's collective dynamic behavior.

2) Tympanometry - Tympanometry is a test that is used to assess the state of the middle ear and eardrum mobility which is called tympanic membrane and conductive bones by generating changes in the ear canal's air pressure.

3) Orthoptic - Orthoptics is a specialty affiliated with the eyecare profession that main focus is on strabism (wandering eye), amblyopia (lazy eye) and eye movement disorders treatment and non-surgical management.

4) Electroretinography -  Electroretinography (ERG) is an eye test that measures retinal activity (the part of the eye that detects light).

5) Aphakia  -  Aphakia is the loss of the eye's lens due to surgical intervention, such as a perforating wound or ulcer, or congenital defect in cataract surgery.

6 ) Cornea - The part cornea is the clear front of the eye containing the iris, pupil and anterior chamber.

4 0
3 years ago
DNA fingerprinting is used: *
omeli [17]

1.) For all of the above

2.) supplementary single-stranded ends.

3.) The strong negative charges from the phosphate groups in the DNA backbone cause it to migrate toward the positive pole.

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3 years ago
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antoniya [11.8K]

Answer:

The hare population decreases.

Explanation:

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What would earth’s surface look like if earth did not have an atmosphere?
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Earth would basically look like the Moon; minus the craters, of course. This is because with no atmosphere to hold all of the Oxygen near the surface, all life would die off fairly quickly.
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