D. They are heterotrophs that digest food internally.
Answer:the answer is B
Explanation: just took the quiz
I believe you are right. pH is the concentration of H+. Therefore the more acidic the more H+.
Explanation:
The given data is as follows.


Electric potential energy (
) = ?
Formula to calculate electric potential energy is as follows.
= 
= 
Thus, we can conclude that the electric potential energy of the pair of charges when the second charge is at point b is
.
Magnets are attracted when each of the different sides, most commonly known as "North" and "South", are facing each other. They repel when North and North, or South and South are facing each other.