What causes the earth's magnetic field?

A.

the mineral composition of the earth's crust

B.

magnetic particles located at the earth's poles

C.

molten material in the mantle

D.

currents in the earth's liquid-metal outer core

In many organisms, on both the microscopic and gross levels, there are anatomical structures with specific adaptations to serve to increase surface area in order to facilitate chemical reactions as well as transport mechanisms.

Seth will attend college in the fall and live in the dormitory, so he is required to obtain a blank against bacterial meningitis, which will stimulate his body to produce immunity to the disease.

The only part of earth's inner structure that is a liquid is the

True or False: Common and Australia Blacktip Sharks are the same species.

Is a sponge permeable

Gel like substance inside the cell but outside the nucleus

The graph of a function increases twice as much over each subsequent equally sized interval. Which of the following could be the parent function of the graphed function?

Fenway park, home of the boston red sox, is situated on land that was once a fen, a kind of wetland. the replacement of the fen is an example of what? pollution overexploitation habitat destruction competition

Explain how the terms set below is related: Heterotroph, omnivore, carnivore

Which of the following are atoms of the same element? Check all that apply. an atom with eight protons and seven electrons an atom with nine protons and seven electrons an atom with eight protons and eight electrons an atom with eight protons and no