Correct answer: Greenhouse effect.
In laymen's terms it is easy for it to created bonds (covalent) with other elements; it is the backbone for most chemicals in the human body. It's also part of glucose sugar, one of the most common natural sugars that occurs especially in fruits.
Answer: Pioneer Species
Explanation: Because they are part of a hardy species that whom are the first to move to a previously bio diverse steady ecosystem.
Answer:
Different numbers of neutrons
