When a plant performs respiration it behaves as a

A. carbon source

B. producer

C. consumer

D. carbon sink

What is the correct name of S4N2

Which functions as part of both the reproductive system and the urinary system in males?

Are most genes influenced by a single or multiple genes working together?

In what time period did archaea first formed?

Which of the following describes a high-intertidal zone A: completely absent of sunlight B: the intertidal zone only cover by high tides C: the area of lowest elevation in ocean tidal zones D: the first 600 feet of depth in the open ocean

Freud believe that certain troubling symptoms could be traced to painful unconscious memories. This led him to suspect that these symptoms resulted from

Reducing the volume of a gasits pressure if the temperature of the gas and the number of particles are constant.

Salt deposits form on a car in the winter. Over time, the salt covers more of the car. Is the salt alive? a. Yes, salt deposits are alive because they maintain their structure. b. No, salt deposits are not alive because they do not reproduce. c.

Belinda recently completed a treatment program for breast cancer. For the last year, she took a drug treatment that worked to interfere with rapid cell division; what type of cancer treatment did Belinda undergo?

What do scientists call the theory that the universe will shrink in the future?