Apopulation of hermit crabs is separated by a large sandbar. this is an example of geographic isolation gene flow cospeciation population division

Warming up prepares the body for exercise in what way? a. muscularly b. cardiovascularly c. neurologically d. all of the above

Most of the phosphorus on earth comes from ?

Which describes a side effect? a. an unwanted physical or mental effect caused by a drug b. developing a chemical need for a drug c. the need for increasingly larger amounts of the drug d. the body’s reaction to not having the drug