The number of individuals of a species in a given area is known as

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

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Which direction does the energy flow in this energy pyramid ?