Which organ system gives instructions to the muscular system and the circulatory system during exercise?

Aseries of connections of food chain in an ecosystem is called a what

Explain why phospholipid molecules form a bilayer. (3 marks)

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems