Unlike freshwater fish, saltwater fish
a. often contain a lower concentration of salt than the water they live in.
b. tend to gain water from their surroundings.
c. would swell if they didn't conserve water.
d. would swell if they didn't eliminate salt.

Are substances released into the environment that in excess amounts cause damage

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.

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel