There are 4 thing that need to happen for natural selection to occur:
1) reproduction
2)heredity
3)variation in fitness or organisms
4)variation in individual characters of the population.
<span>D. Gravity is the force of attraction between two objects and is dependent upon the mass of the objects and the distance between the objects.</span>
Yes it will help you with c and d
Answer:
Nuclear fission is the splitting of atoms while fusion is the combining
Explanation:
fission does not occur naturally while fusion occers in stars
