Ahigher frequency is often perceived as having lower pitch. true or flase

Which system revise and send electrical signals throughout the body

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

Ais a group of individuals of the same that exist together in the same place at the same time