On hot, dry days, guard cells often close microscopic openings in plant leaves, conserving water. this is an example of
a. environmental factors causing gene mutation
in plants
b. finite resources acting as selecting agents for
evolution
c. a feedback mechanism for maintaining homeostasis
d. differentiation in plants as a result of stimuli

A feedback mechanism for maintaining homeostasis.

Explanation:

In science term, Homeostasis is defined as a mechanism by virtue of which animal or plant cells will try to maintain the equilibrium state in the internal environment using feedback mechanism within the system.

It is also very important to maintain a good communication between the internal organs to maintain the internal environment. A proper functioning body whose needs are met is generally observed in the process of homeostasis.

answer; i believe that the best answer is (secondary cardiac arrest due to

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg