Phase is the period during the life of a cell between the end of mitosis and the synthesis of more genetic material.

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.

The united states uses which source of energy to produce almost 40 percent of its electricity

Which process forms a large molecule from repeating subunit molecules? *