What role does a forest fire play in the carbon cycle?
a forest fire will release carbon trapped in the into .
-lithosphere
-biosphere
-atmosphere

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Fungi exist as single cells or as branching networks of multicellular filaments. how does the structure of filaments relate to their function

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.