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coldgirl [10]
3 years ago
8

At what points during the year are fish—which need a large amount of dissolved oxygen—most likely to be evenly distributed throu

ghout the water of a lake that freezes over in winter?
Spring and fall when warm and cold water mixes
Fall and winter when the water is warmer
Summer and winter when warm water settles on the bottom
Spring and summer when the cold water settles on top
Biology
1 answer:
Nuetrik [128]3 years ago
6 0

Answer: The correct answer is (a)Spring and fall when warm and cold water mixes

Spring and fall when the warm and the cold water mixes and the mixing of water evenly distributes the oxygen present in lake. During winter the cold water is below the ice and the different areas of lake have different concentration of dissolved oxygen. In summer the warm water lies above the cold water, here also the concentration of dissolved oxygen varies.

Hence, during spring and fall the warm water and cold water mixes which evenly distributes the dissolved oxygen present in lake.

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Match the following terms and definitions. 1. an electrical nerve impulse sent by nerve fibers to the central nervous system for
vladimir1956 [14]

Answer:

1. an electrical nerve impulse sent by nerve fibers to the central nervous system for interpretation. <u>Action potential. </u>

2. neurons that detect chemicals such as those found in food. <u>Chemoreceptors. </u>

3. type of eyes many arthropods have; eyes that protrude outward and consist of many lenses. <u>Compound eyes. </u>

4. the structure that gives the response to an environmental change.<u> Effector</u>

5. neurons that detect electrical fields. <u>Electroreceptors. </u>

6. secretion of hormones into the blood stream to affect distant processes. <u>Endocrine.</u>

Explanation:  

An action potential is a change in the internal charge of a cell due to depolarization. These changes allow the transmission of a message from any part of the body to the central nervous system. The central nervous system will interpret the message and will give a response.

There are different types of receptors in our bodies. Chemoreceptors are the ones that detect chemicals and produce an action potential or a neurotransmitter. These receptors respond to chemicals. Another type of receptor is the electroreceptors. They detect electrical fields and are only on the skin of aquatic animals.

Compound eyes have a large number of ommatidia. As a result, the anthropods with this type of eyes have a large view angle. In other words, every ommatidium sees an image, and the final product is a combination of all of them.

The effector is the structure that gives an answer once an affector has sent the message to the nervous system that there was a change in the environment.

There are different kinds of secretions, autocrine, paracrine, and endocrine. In the endocrine secretion, the gland secrets hormones into the bloodstream so that they can travel long distances up to their target cell, which is far from the gland.

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D. Protein.

Widely distributed in many foods, phosphorous is especially abundant in foods high in protein.

Phosphorus is found in many foods and is found in high amounts in foods that contain protein. Phosphorus is found in smaller amounts in vegetables and fruit. Phosphorus is the second most abundant mineral in the body, second to calcium.

The main function of phosphorus is in the formation of bones and teeth. It plays an important role in how the body uses carbohydrates and fats. It is also needed for the body to make protein for the growth, maintenance, and repair of cells and tissues.

To learn more about protein here

brainly.com/question/2193769

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