Which question is testable

Which of these changes is a chemical change?

The strongest evidence for evolution from a common ancestor is

A metal surface becomes dull on exposure to air. phyiscal or chemical change?

Which of the following statements best describes how oxygen enters the lungs?

Explain how creativity can play a role in the construction of scientific questions and hypotheses.

Which of the following is true about the hierarchy or organization of life? (Check all that apply) A. Changes at the lowest level can affect the more complex levels. B. Cells make up tissues. C. Cells are made up of macromolecules. D.

Unwrapped food placed in a freezer experiences dehydra - tion, known as "freezer burn." why?

Which muscle group has the largest increase in circumference when contracted? Why do you think this occurred?

You are caring for a client who is a refugee from haiti. the family has been displaced because of an earthquake in their country. the client has healing fractures on his right arm as well as fractured ribs.

What happens to enzymes when you boil them?