Wavelike, rhythmic contractions called propel food through the pharynx and into the esophagus.

Name the part of the the brain labeled "e".

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 forest management practices is best for reestablishing areas of forest?