The study of interactions between living and nonliving things
A measure of the total dry mass of organisms within a particular region
Evaporation of water from the leaves of a plant
An ecosystem where all water runoff drains into a single body of water
The process by which certain gases (principally water vapor, carbon dioxide, and methane) trap heat that would otherwise escape the earth and radiate into space
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.
NEW! Voice Recording
Click the mic to start.