Answer:
A
Explanation:
Activation energy is the amount of energy required to reach the transition state, so A would seem like the best fit, because the heat is being ADDED to reach the state. (in this situation, starting the reaction)
Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes. These chromosomes then become visible. During this stage, the nucleus disappears and the chromosomes appear in the cytoplasm of the cell. ... As metaphase continues, the cells partition into the two daughter cells.
Answer:Chemical Composition
Explanation:
none of the others make even the simplest of sense.
Carbon is Carbon so it's just one atom.
Air is mostly O2, N2, H2O and ....
Salt is NaCl and not one atom ;)
