What is the best evidence to support that an occluded front is occurring? 1.A warm and cold front collide and remain motionless.

2.Cool air sinks and warm air rises, creating a convection current.

3.A cold front pushes warm air upward, and the cold front collides with a cold front.

4.A warm front pushes into the area, creating clear skies and warm weather.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.