When dry environmental conditions exist, guard cells close the openings in leaves to reduce the loss of water from the plant. this process is an example of a feedback mechanism that plants use in order to a. produce more chlorophyll. b. absorb more solar energy. c. maintain homeostasis. d. expend their resources.

C. maintain homeostasis.

Explanation:

A stoma is formed by the guard cells and the ostiol, a small opening. It is this opening that connects the external environment to the interior of the plant's tissues, an intercellular space called the sub-stomatic chamber. By controlling the opening and closing of ostioles, the plant is able to control homeostasis within the leaf, by controlling the entry of gases and preventing exaggerated water loss. In this way, the plant allows the complete balance of your organism.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

the man is bald so he has no hair to get wet