Answer:
A negative feedback initiated by the external simuli or the products of a reaction aims to reduce the products/ output of the reaction. Hence In negative feedback the stimulus is reduced. An example of a negative feedback would be if a person had an elevated body temperature, the homeostatic response would be to lower the body temperature.
When an ecosystem has a scarce nutrient, that is when there is a nutrient limitation.
So the answer is C. <span>Nitrogen is typically the limiting nutrient in freshwater environments.
This is because Nitrogen is the "scarce" nutrient </span>
This happens because when leaf are submerged it is using light to continue process of photosynthesis, this process includes the release of oxygen that we see in bubble format .
<h3>Why the gases came out of the leaf when it was put into warm water?</h3>
When the leaf is put in warm water it is using light to continue the process of photosynthesis. Part of this process is to let oxygen out of the leaves. It is this oxygen that you are seeing as bubbles in the water.
<h3>Which part of the leaf the gas came from?</h3>
The only way for gases to diffuse in and out of the leaf is though small openings on the underside of the leaf, the stomata.
To learn more about photosynthesis ,here
brainly.com/question/1388366
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The answer is a. Nitrogen
It has smaller surface area so cant use the iodine solution effectively
