What might happen to the carbon cycle if dead organisms did not break down?
A)Bacteria would begin fixing carbon
dioxide and adding it to the soil.
B)Carbon would not be recycled and
added to soil, interrupting the cycle.
C)More carbon dioxide would be available
for photosynthesis.
D)Other sources of carbon would need to
be found to keep carbon in the cycle.

Francine, a college freshman, has agreed to participate in a psychology research study. before she begins her participation, she reads a statement written by the researcher explaining the purpose of the research and the potential risks of participation. it also explains that francine is free to withdraw from the research at any time. in providing francine with this statement, the researcher has followed the ethical guidelines of for participants.