Gene flow is partially responsible for

- genetic sameness.

-genetic variation.

How does morphology provide evidence of evolution?

Given the general chemical formula X2O, to what group in the periodic table does the Period 2 element represented by X belong? A. 1 B. 16 C. 2 D. 17

There are many ethical issues associated with cloning. Which of the following is NOT a concern? A. that the creation of a human clone is in itself an unethical use of science B. that the rights of the human clone will be respected C.

Why do you usually need more than one hypothesis for a question?

What is another name for a tropical savanna?

Drake is comparing time people spend playing games on Xbox versus Playstation. In his study, individuals ages 10 - 15 are given Xbox's and individuals ages 16 - 25 are given Playstations.

How do scientists obtain knowledge about the world? Check all that apply.

What would the temperature of the surface be if the Earth did not have an atmosphere?

How would the lack of water affect cellular respiration?

Different types of normal tissues in the human body have different mitotic indices. From the following list, which normal tissues would you expect to have the highest mitotic index: muscle, skin, kidney, or lung? Explain your answer.