They get energy by preforming chemical reactions within the cell
Answer:
C
Explanation:
Every living thing is made up from cells, as they are the smallest unit of a living thing.
The cause of the change in insect characteristics occurred when a few survivors of the 1st spray became resistant to the insecticide. When they had offspring, those insect babies are born with the trait that made them resistant to insecticide. This occurs when the parents pass on the trait to their offspring. The end result is that the insecticide is less effective and more insects survive.
