Lionel is replacing the kerosene in a heater. What should he avoid? A. flames B. electricity C. water D. freezing temperatures

Which sentence summarizes the water cycle? a) The water on earth changes forms as it moves from one reservoir to another. b) Water in the atmosphere must be converted to another chemical before animals can use it.

Many individuals suffer from atherosclerosis, an arterial disease that effects large to medium-sized muscular arteries. What does this disease do to the structure of an artery?

The absence of which organelle would limit the energy production in an animal cell

5. Describe the sequence of oxygen, carbon dioxide, and blood flow in your own words?

What blood vessel brings the blood from the lower pat of the body back to the heart?

Why does a horse have a higher mechanical advantage than a human?

This is the reproductive part of the plant and it produces seeds and develops the fruit

During the cardiac cycle, the bicuspid valve closes: a. while the ventricle is in diastole b. when the ventricle is in systole c. while the atrium is contracting

15. Which of the following is not a result of increased global temperatures rising sea levels more frequent and intense storms global ice ages increased oxygen levels

In a bacterium cell division takes place when