The regulation of gas exchange by the guard cells of stomata is an example of A.
a limiting factor.
B.
a feedback mechanism.
C.
natural selection.
D.
anaerobic respiration

Sammi is studying the interaction of the digestive and circulatory systems in the human body. she has listed various processes that occur in each of the systems. put the processes in order to describe the interaction between these two systems. tiles nutrients diffuse through the villi of the small intestine.digestive processes break nutrients down in the mouth, stomach, and small intestine.blood is pumped through the circulatory system to deliver nutrients to other organs.nutrients are ingested at the mouth.nutrients enter the capillaries of the circulatory system. sequence

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Explain why the plants cortex would serve as the best food source for animals