15. the scale begins with the

Explain how scientists use geologic time to determine the age of landforms.

In what part of the body does the most muscle activity happen?

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.