Answer:
A
Explanation:
insecticides are safe to use
using seeds from the same source.
using the same kind of soil for both groups.
giving the control and experimental groups the same volume of water.
keeping the light the same for the experimental and control groups.
measuring plant height the same way and at the same time for both groups.
Answer:
It is the cycle when the reproductive organs start to fertilize. Another form of this is called the menstural cycle when natural changes in the uterus and ovaries to make reproduction possible soon.
Neither brain nor the Muscles
