D.
A would be "How were they behaving..."
B would be "Are these books new?"
and C would be "Have the Robinsons..."
Answer:
Timing and energy are also factors in isomerism. Molecules are mobile entities, undergoing all sorts of rotational motions that change their shapes, and those motions require energy. Thus, some molecules can be the same on one timescale or set of energy conditions but different, or isomeric, on others.
Explanation:
Molecules are mobile entities, undergoing all sorts of rotational motions that change their shapes, and those motions require energy.
2 cups technically a lil more than that but it asked how many CUPS so
