10. Radioactive isotopes in fossils decay at a constant rate. The ratio of radioactive isotope to
or the rock it was found
in. This is an example of
dating.
stable isotope can be examined to estimate the age of the fossil
• A. absolute
• B. magnetic
• C. relative
A
O D. Precambrian

is in the form atp or adenosine triphosphate

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

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