Simple plants found in water, such as seaweed or pond scum
Any of the small, celestial bodies orbiting the sun mainly between Mars and Jupiter
Having to do with or consisting of cells
The act of burning
Having to do with the branch of science that studies the relationship of organisms to their environment
A single thread or a thin wire
Having to do with the study of the earth and its life
Having to do with characteristics that are passed on from parent to offspring
A trial answer to a problem
Having the ability to attract
Scientist who studies the properties of matter and energy
The relationship in amount or size between two or more things
A classification of closely related organisms
A layer of rock made up of the same kind of material
Below the surface of the sea
Not constant or steady; easily changed
A preparation given to build up immunity to a particular disease
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.