What is bias in an experiment?
a. something that makes the experiment more reliable
b. something that makes the experimental results clearer
c. something that the scientist analyze the data
d. something that pushes the experimental results one way or another

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

Which scenario is most similar to the type of collision that gas particles have according to kinetic molecular theory

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.