Explain why there is a difference in the amount of oxygen taken in at rest and during the vigorous activity. ​

Construct at least two possible hypotheses for the student’s experiment.

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.

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?