A nonliving part of an organism's habitat.
The grinding away of rock by other rock particles carried in water, ice, or wind.
Rain that contains more acid than normal
Describes a substance that reacts strongly with metals and changes blue litmus paper red
A behavior or physical characteristic that helps an organism to survive in its habitat
An earthquake that occurs after a larger earthquake in the same area
A huge body of air that has similar temperature, humidity, and air pressure throughout
the result of the weight of a column of air pushing down on an area
a wide, sloping deposit of sediment formed where a stream leaves a mountain range
Elevation above sea level
An instrument used to measure wind speed
an instrument that measures changes in air pressure without using a liquid
A high-pressure center of dry air
The farming of water Organisms
The soft layer of the mantle on which the lithosphere floats
Earth's envelope of gases
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 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.