List six distinct ecological zones that can be found in the ocean.

A change in the gene pool of a population form one generation to the next that does not necessarily result in speciation is an example of

The ripened ovary of a flower, which is adapted to disperse seeds, is called a/an

What causes a species to become extinct?

Which statements explain what the fossil record indicates? Check all that apply. Earth is 4.5 billion years old. Many organisms have become extinct. Mammals have always existed on Earth. Mass extinctions have occurred several times on Earth.

What's the answer? This animal represents what kind of body symmetry? asymmetry radial symmetry bilateral symmetry

Which of the following correctly arranges the planets by the size of their diameter? A) Uranus < Neptune < Mercury < Earth B) Earth < Mercury < Neptune < Uranus C) Mercury < Earth < Saturn < Jupiter D) Jupiter < Saturn < Earth < Mercury

How does ultra radiation cause skin cancer

How many ribose molecules are found in ATP?

Would a person be squashed by extreme gravity, float with ease, freeze, burn up, or something else

According to "Life Without Gravity," why can astronauts' muscles become weak? A. Without gravity, the blood is rerouted from the legs to the head. B. Without gravity, the body "grows" by as much as several inches. C.