It is often stated that natural systems are capable of cleaning pollution (at least when the contamination is not large). How can plants and animals in the environment clean water?
What will be an ideal response?
The contaminants are used in the organism, and many compounds are rendered
harmless (becoming a normal constituent of the organism.
You might also like to view...
Consider three galaxies, Alpha, Beta and Gamma. An astronomer in Beta sees each of the other two galaxies moving away from him in opposite directions at 0.70c. At what speed would an observer in Alpha see the galaxy Gamma moving?
A) 1.4c B) 0.94c C) 0.98c D) 0.82c E) 0.70c
How does increasing the temperature affect a semiconductor?
You can hear sound through an open window from sources that are not in your line of sight because of
a. interference b. diffraction c. the sound level d. the Doppler effect e. none of the above
The fact that some satellites and planets have cratered surfaces supports the hypothesis that planets and satellites were bombarded by planetesimals.
Answer the following statement true (T) or false (F)