What is a independent variable in science?

In the ecological pyramid, the amount of potential food available for each trophic level A) remains the same. B) increases over time. C) decreases from bottom to top. D) increases from bottom to top

Endothermic reactions are reactions where energy usually in the form of heat has to be added in order to make the reaction take place A) true B) false

A promoter is (A. binding site for DNA polymerase B. binding site for RNA polymerase C. start signal for replication D. stop signal for transcription

A cell has a 2% salt concentration. It is placed into a solution containing a 2% salt concentration. What will happen to the cell? Choose 1 answer: Water will move out of the cell, causing it to shrink.

What does it mean if something has a visible nuclei

After several generations survive in the altered environment, what will the average body size of yellow tangs in this population be?

How does climate change affect energy in the atmosphere A. Increased ice causes less energy to be reflected B. Increased ice causes MORE energy to be reflected C. Decreased ice causes more energy to be reflected D.

Which describes the behavior of members of a herd leaving an area to find food

Is a cat a mammal or reptile?

A biologist trying to determine the mechanism of adenosine triphosphate (ATP) production in a newly discovered bacterium provides several different substrates on which the bacteria can feed.