All chemical reactions A. Involve the creation of new atoms.

B. involves a change in chemical bonds.

C. are dangerous.

D. create energy

What best explains the inability for life to exist in earth early atmosphere

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?