Which natural cycle is affected the most by the use of fertilizers? A. oxygen cycle B. water cycle C. carbon cycle D. nitrogen cycle

In black bread mold spores are produced in structures called

Describe why sexual reproduction allows for more variations in a population when compared to asexual reproduction.

the acceleration due to gravity on the surface of mars is about one third the acceleration due to gravity on earths surface. the weight of a space probe on the surface of mars is about

Name some biotic factors that you might see in a local pond/meadow ecosystem

What is the most obvious indicator that aging begins in young adulthood?

Using a broom to clean sidewalks and driveways is a way to reduce water pollution

The model shows two types of proteins, channels and carriers, allowing the movement of molecules into the cell.

Temperature, pH, and ionic concentrations each play an important role in the proper functioning of enzymes.

What was the purpose of the vinegar in the third trial? a. test the effect of raising pH on enzyme action b. test the effect of lowering pH on enzyme action c. serve as a control d. served no purpose

How do substances move in passive transport?