How many lungs does the human body have?

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 element does susan b. anthony include in this passage to strengthen her argument?

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the