Which best represents surface water in a watershed?

1. Ground water

2. Rivers and lakes

3. Underground springs

4. impermeable rock layers

When particles move out of a cell through facilitated diffusion, the cell A. first gains and then uses energy B. does not use energy C. uses energy D. uses energy

Which structure maintains homeostasis by controlling the concentration of solutes within a cell? cytoplasm ribosome plasma membrane nucleus

What is the body's first line of defense against disease?

Was the first person to propose the idea of moving mountains continents as a scientific hyphothesis

Quasars emit large amounts of a. galaxies. c. visible light. b. radio waves. d. color.

A hypothesis is a purpose for a scientific

How can an igneous rock become a metamorphic rock?

Some species are symbiotic to each other, meaning they live together in a close, long-term association. What is the term for a symbiotic relationship in which both participating species benefit?

Which type of light can humans perceive with the eye? A. ultraviolet B. infrared C. visible D. gamma

The kingdom Animalia includes all of these except jellyfish. sponges. amoebas. roundworms.