Answer:
D.A substance that is produced during a chemical reaction
Hello there,
As from what I can recall, I can remember 4 concerns regarding nuclear energy
1) Storing radioactive waste
2) Safety
3) Weapons proliferation and terrorism
4) Health
Hope this helps ;))
~Top
Tracers are defined as elements
that can be monitored through biochemical reactions. This characteristic of tracers makes
them useful for the exploration of the mechanism of chemical reactions by
tracing the path that the they follow from reactants to products. A good
number of complex biochemical reactions (e.g. photosynthesis) have been studied
using tracers.
