What causes ocean surface currents?

A. gravitational attraction

B. friction between the ocean and wind on its surface

C. ocean movements associated with earthquakes

D. changes in water density

Malfunctions of the mitochondria can cause a number of disorders. Which statement best explains how mitochondrial problems can affect an organism?

A scientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. What population is most likely to be a control group for the investigation?

What can exponential growth occur in a population?

How does yellow fever your organs and how do the cells response?

Which pair of of apply to the same organism

The shape and size of a birds beak would mostly be affected by what environmental limiting factor

Why do you think scientists use the word mutate to describe the genetic process shown in the video

Which best describes the purpose of a controlled experiment? A. to make sure the results of the experiment support the hypothesis B. to prevent a dangerous condition resulting from a reaction C.

Bones, joints, ligaments, and cartilage are parts of the a) refrigerator b) muscles c) skeleton

Chloroplasts cannot move on their own. How do they move around the cell?