What happened during the Pleistocene to cause global cooling?

A) fossil fuel consumption

B) low solar activity

C) a shift in earth's orbit

D) breakup of Pangaea

Which energy source generates radioactive waste? A. Nuclear B. Hydroelectric C. Wind D. Solar

Which of the following can be used by scientists to date the sedimentary layer they are found in? Select all that apply.

What properties do light and the waves in your bath share?!

What does dr. carroll mean when he says, "while mutation is random, natural selection is not"?

When would slime molds likely gather to form one, large structure?

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.