Which type of solar heating uses mechanical means?
electric
active
photovoltaic
passive

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

What occurs to the cell during mitosis

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?