Why is there no boundary at about 1000 meters in the benthic environment but a significant one at about the same depth in the pelagic environment? think of what the main control on the benthic organisms might be that the pelagic organisms would not have to contend with, and vice versa.
why do the dissolved nutrients drop in the spring?
why does the spring phytoplankton bloom start in the spring and die out in the early summer?

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.

all fossil fuels are nonrenewable, so think coal, gasoline, things that we will eventually run out of. all fossil fuels are nonrenewable resources, but not all nonrenewable recourses are fossil fuels. these resources are not being renewed as fast as we are using them. i hope this considering there weren't any answer choices.