(please help!) Chimpanzees, chickens, cows, and human beings all share a gene for an insulin hormone. What does this suggest? (1 point) a. This suggests that none of these species share a common ancestor.

b. This suggests that all of these species share a common ancestor.

c. This suggests that two of these species share a common ancestor.

d. This suggests that three of these species share a common ancestor.

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation:

answercells,tissues,organs,organ,system-organism;

levels of biological organization; organism,population,community,ecosystem,biome,biosphere,

hope this .good luck