Answer:
Explanation:
Two of the most important and widespread vitamin-derived coenzymes are nicotinamide adenine dinucleotide (NAD) and coenzyme A. ... When NAD loses an electron, the low energy coenzyme called NAD+ is formed. When NAD gains an electron, a high-energy coenzyme called NADH is formed.
Answer:
1. B. parasitism
2. C. parasitism, predation, mutualism
Explanation:
B. only 3% of water on earth is fresh
The beginning of spring in the Northern Hemisphere is marked by the Vernal (spring) equinox. I hope this helps!