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

Two different species of birds live in the same habitat would be the same type of nesting place. As a result, both species will

In humans which set of chrosomes do males have

Which of the following statements is false humans are more complicated than crickets

What are the technical name for red blood cells white blood cells and platelets?

Which of the following statements is true of evolution? A. Evolution does not always progress in one set direction. B. Earth's present-day species evolved from older, identical species. C. Limited resources discourage the evolution of species. D.

Er Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body? Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being transported to her lungs.

As the human population grows, what happens to our natural-resource requirements? UT O They increase O They decrease They do not change They go in cycles.

A client undergoing corticosteroid therapy is admitted with a peptic ulcer, osteoporosis, and hypertension. which medication may have caused this condition?

Why do most leaves appear green

What is the first word in a two word name of an organism