Using blood doping to artificially increase the number of red blood cells in an athlete might lead to a long term shortage of red blood cells because 1) red blood cells could stop being produced by meiosis2) homeostasis could be disrupted in the athlete3) red blood cells could attack and destroy the extra red blood cells 4) the athlete would no longer need red blood cells

Homeostasis could be disrupted in the athlete

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:

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.