If bed bugs had never been exposed to DDT in the 1950’s and 1960’s, how would you expect that affect bed bugs’ resistance to pyrethroids during the last decade?

Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

There are only about 250,000 known fossil species. true or false