Which human activity is correctly paired with the greenhouse gas that it increases? A) rice cultivation and water vapor
B) land filling and carbon dioxide
C) deforestation and methane
D) sewage treatment and nitrous oxide

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?