There is no answer ,you wrote the answers with the question
it goes throug the nerves to where your brai want to move the part
example
you want to walk it send signals to right leg thern left leg
Explanation:
rewatch the video your teacher provided on edunity
Answer:
There are 4 condition:
1. Heredity
2. Reproduction
3,. Fitness or organism
4. Variation in individual characters among population
