Which is not true about natural selection? a. there must be diversity in the population
b. It is driven by natural processors like predator or weather
c. Humans are involved and can select the most desirable organisms
d. predators, geological activity, and weather can all have an impact on organisms

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

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.

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian