Which are characteristics of flukes? Check all that apply.

A. They are free living.

B. They are a type of flatworm.

C. They reproduce sexually.

D. They have eyespots.

E. They are segmented.

If the concentration of oxygen in a body tissue cell is 5% and the concentration of oxygen in the blood surrounding the cell is 10%, which direction will the oxygen diffuse?

What is the papillary response of the right eye when a light was shone into the pupil?

What are the giant outer planets mostly made of? A. rocks B. gases C. minerals D. water

What is cation exchange

What are two plants whose stems store water?

What is one important reflex that eventually leads to standing and walking? a. coughing b. swallowing food c. grasping a finger d. blinking eyes

Two species of birds feed on berries. the birds are active at different times of the day, and do not come into contact with one another. nonetheless, the presence of one species limits the survival and reproduction of the other.

Satellite imaging can be used to: predict weather analyze geological structures locate oil deposits all of the above

Which bird (s) was/were most successful after 1,000,000 years? Why were they more successful?

A student makes the analogy that the cardiovascular system is like a highway. Why is this a good analogy?