What is the function of nitrogen- fixing bacteria?
A. They are able to repair damaged nitrogen
compounds.
B. They are able to release nitrogen into the
atmosphere.
C. They are able to take atmospheric nitrogen and
convert it to usable ammonium.
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Looking at this image, what relationship can be drawn from it? the lower the degree of latitude, the lower the degree of temperature there is no relationship between latitude and temperature the higher the degree of latitude, the higher the degree of temperature the lower the degree of latitude, the higher the degree of temperature

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

9. the history of life on earth is recorded in