Which term describes the picture? impermeable:
doesn't allow any
molecules to pass
through
permeable: allows
all molecules to
pass through
selectively
permeable: allows
only certain
molecules to pass
through
all are correct

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?