What biotic and abiotic factors influence the flow of matter and energy in different biomes

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

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

Amap's orientation is typically determined by an