A plant has two organ systems: the shoot system and the root system.

Does mercury melt in your hands or does it use barometers and thermometers

You will NOT find a cell wall in which of these kinds of organisms? A) plants B) animals C) fungi D) all of the above

Gray matter on the surface of the brain is/are called

Development and impact on desert areas is mainly due to Select one: a. air conditioning. b. roads and highways. c. modern irrigation. d. None of these are correct.

Where do scorpions get their energy from?

Which function of the nephron includes the movement of fluid from the blood into bowman's capsule?

Which one of the following is true for a theory? A) Explanation supported by experiments B) Widely accepted as true C) Supported by repeatable results D) All of the choices

Which of the following is the largest contributor to the salt ions in the ocean? sodium chloride sulfates calcium

Your body moves food thourgh the digestive tract by using a. smooth muscle b. cardiac muscle c. extensor muscle d. Flexor muscle

A group of organs that work together to perform a major function is called a (n)