Answer:
A, the sun.
Explanation:
The sun powers the water cycle and many others.
The hydrogen bonding that created its hexagonal shape....the molecules get closer together and there will be more hydrogen bonding making it solid
NADPH is a reduced form of NADP+. The latter features an extra hydrogen ion in its chemical structure. When NADP+ transforms into NADPH, the other hydrogen ion is released as part of the reaction while the other hydrogen ion becomes a part of the NADPH structure.
The enzymatic breakdown of large molecules into their basic building blocks is <u>Mechanical Digestion </u>.