How can the body of an animal stay healthy

A). making food

B). getting enough sunlight

C). reproducing

D). fighting disease

What is the most common element in a star such as the Sun? Select one: a. helium b. oxygen c. nitrogen d. hydrogen

These diagrams demonstrate how cells can be differentiated by their

What do we call a procedure used to test a hypothesis

When can groundwater become part of lakes or rivers?

True or False? When scientist arrive at contradictory conclusions about the same experimental results, more results, more research may be needed

7. There is a narrow opening from the Mediterranean to the Atlantic called the Strait of Gibraltar. During World War II, submarines would sneak quietly through the heavily patrolled strait by shutting off their engines.

Suppose scientists have 2 substances that look alike. how could they use density to see if they are the same substance?

Lysogenic bacteriophages contribute to bacterial virulence because bacteriophages kill human cells. carry plasmids. kill the bacteria, causing release of endotoxins. produce toxins. give new gene sequences to the host bacteria.

The organ of blank contains the sensory cells of the cochlea.

8. What does Sl stand for?