Achemical bond formed when atoms share three pairs of electrons is a. an ionic bond b. a single bond c. a double bond d. a triple bond

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

The energy needs of a human population are not affected by

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.