Mid-ocean ridges, which contribute to the process of sea-floor spreading, form as a result of .

A. earthquake activity that causes subduction

B. a rift valley, like the Red Sea, being filled

C. older ocean floor that moves toward the ridge

D. volcanic activity that produces magma

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.

Explain the significance of meiosis in sexual reproduction

The primary organisms involved in the process bacteria and fungi.