Why must organisms of the estuary be adapted to varying levels of salinity? a. fresh river water flows into the estuary
b. saline ocean water flows into the estuary
c. ocean tides increase and decrease the amount of ocean water
d. all of the above

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

Which is the best example of plant tissue? the answer is d (just took the test)

Internal feedback works to maintain homeostasis when your a. heart rate decreases as your white blood cells increase b. breathing rate decreases as your red blood cells decrease c. heart rate increases as your liver is cleaning blood d. breathing rate increases as your heart rate increases