During the Pliocene Epoch, which of the following organisms appeared for the first time in the geological record?

A. horses

B. mammoths

C. mastodons

D. modern humans

Which of these pairing is incorrect? Blood cells, components of blood neurons, conduct electrical impulses epithelial cells, react to stimuli Muscle cells, elongated cells that can contract

Which is a disadvantage of inbreeding a. higher birth rate b. increased fertility c. increased genetic disorders

Why is the sequence of DNA important? a. It is used to create copies of cells b. It makes sure there will be no mistakes in the information c. It determines protein structure

When does slime seem more like a solid and when is it more like a liquid?

What would happen if the producers were removed from an ecosystem?

You are preparing a medium for growing fastidious bacteria and must add several heat-labile solutions of growth factors. Which of the following is an appropriate strategy for preparing and sterilizing this medium? a. Pasteurize the medium. b.

What does Earth's rotation on its axis cause? A the tides B night and day C passing of years D phases of the moon

What are two things that a leaf does for a plant

The protostome developmental sequence arose just once in evolutionary history, resulting in two main subgroups-Lophotrochozoa and Ecdysozoa. What does this finding suggest?

Explain why it would be detrimental to desert plants to have a large number of stomata on their leaves