What distinguishes a hypothesis from a theory? A. A theory is a scientific explanation. B. A theory is testable. C. A theory explains a natural phenomenon. D. A theory is backed up by repeated observations and tests.

What do mutations bring about

When a cell divides in mitosis, how do the daughter cells compared to the parent cell?

What factor most influences the power pf a stream to erode and transport material?

True or false our sense organs to detcet sound are our ears

Which of the following is not evidence of convex and/or concave lenses being used to perform a task? Watching for nearby cars getting too close in your side view mirrors. Watching snow fall through your living room window.

Excision within the artery (of plaque from the arterial wall) is called

Which organ is a part of circulatory system? select one of the options below as your answer: a. brain b. heart c. lungs d. stomach?

Although they do not have recent common ancestors, birds and bats have similar body shapes necessary for powered flight. what pattern of evolution does this relationship represent?

The science of naming organism and putting them into classification group is?

What kind of energy does the TV have