The number of organisms in a food pyramid decrease as the trophic level A) decreases. B) increases. C) stays constant. D) changes unpredictably.

Since ethnicity is not biologically fixed, self-identification with a particular ethnic group can change through what process?

Fog is a blank composed of water droplets in the air

What is the best form for a hypothesis

What is an experiment with a controlled and uncontrolled variable and what are they?

What is the best way to treat fungal infections like athlete's foot? A. antibiotics B. anti-viral drugs C. antihistamines D. anti-fungal drugs

Which client is at greatest risk for the development of a venous thrombosis?

Which protist is characterized by a pseudopod? A. euglenoid B. slime mold C. ciliate D. sarcodine

Which of the following is an example of quantitative data? A. a solution cantains copper ion B. A plant has five flowers C. A solar system has nine planets

The Eocene period exists in Earth's history around 34 MYA. What could a scientist do to determine what era the Eocene period belongs to on the geologic time scale?

A skateboarder throws a ball away from himself. If the action force is the boy pushing on the ball, what is the reaction force? Which way will the boy on the skateboard move?