Environmental and cultural factors don't affect someone's level of learning or academic performance that much.

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Which would prevent a plant from growing

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