They are single celled organisms
All three of the phosphate groups have a negative charge and since they are all connected to each other by a carbon chain, they have more energy because they repel each other. When you take away one phosphate group, energy is released because the negative charge between those two is released.
Answer:
b
Explanation:
I think its b because there is 25 trees in 2 kilometers of area and there is lass space so the trees will be more crambed together making that space more dense.