A zygote is the first cell that results when an egg is fertilized by a sperm.
I hope this helps.
Answer:thats too hard sorry
Explanation:sorry but i get points so haha
<span>For an outbreak of a waterborne disease to occur, a large number of people must get sick from the water source. </span><span>an outbreak needs a group of people, a large enough group of people, to get sick and at least some of them to seek some kind of medical care so that the cause could be identified. </span>
The standard unit of radiation related to biological hazards is known as the Roentgen.
