Salmon are born in small stream ecosystems. Salmon may spend a year or two in estuary ecosystems before swimming out to the open ocean, yet
another ecosystem. After a couple of years of feeding and growing much
larger in the ocean, they retrace their journey back into the same small
stream where they were born and breed. How would human impacts, like
building dams, affect the population of salmon?
a. The population of salmon might decrease.
b. The salmon population will increase.
c. The salmon population will remain almost the same.
d. The salmon population will rebound the next year.

d

explanation:

the higher the instrument the better

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

easy

explanation:

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.