An example of maintaining homeostasis at the system level would be a. the liver storing excess sugar molecules b. endocytosis and exocytosis of substances c. breathing faster while jogging i know for a fact that the answer is not "b", so don't answer b .

Which of the following elements does soil need in the largest quantities to sustain plant life? a. copper b. iron c. nitrogen d. zinc

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

Which is one example of a phenotypic change that is not genetic