Hearing the word “apple” may lead people to spell the spoken word “pair” as ‘p-e-a-r.” This best illustrates the outcome of a process known as:  

Autotrophs are the of the biosphere, whereas Heterotrophs are the of the biosphere.

Which fishing method involves dragging weighted nets across the ocean floor to catch benthic organisms?

What conclusions can you draw from this graph?

All of the following locations or facilities may give rise to non-point source pollution, EXCEPT for .

is versatile, is used to generate electricity and heat homes, and emits the least CO2 of all fossil fuels.

Most U.S. ethanol is made from and is used to .

Coral reefs get nourishment from symbiotic algae.

Explain one drug treatment that can help change the long-term behavior of an alcohol abuser.

Case control studies are based on: