<span>Correct answer: They end up in bodies of water killing animals and plant life. </span>
Answer:
1.) Why does menstruation begin?
A.) Period happens because of changes in hormones in the body.
2.) How long does the menstrual cycle usually last?
A.) the menstrual cycle lasts 21 to 35 days while bleeding between 2 to 7 days
<u>-TheUnknownScientist</u>
If our eyes were sensitive only to x rays the world would appear dark because X-ray light does not reach Earth's surface.
