Organ System, Organ coll, tissue
Sex linked traits are found on the X chromosome
Answer:
Nuclear energy because it can never be reused again
Answer: C. there is more silicon than calcium at the surface of the earth
Explanation:
In animals and plants, there are two pairs of chromosomes - one set from a male and the other set from a female. But occasionally, the original fertilized cell doesn't quite divide correctly and more than two sets arises. The fertilized cell continues to divide with the result that all the cells have the extra set of chromosomes. This happens much oftener in plants and the plant will be sterile and can't form seeds.