Period marks the end of one menstual......
Answer:
<u>Two eggs</u>
Explanation:
Fraternal twins originate from the fertilization of two eggs. Fraternal twins are also termed as dizygotic twins which means "two cells". Every two twins in a set of three are dizygotic or fraternal. The babies arising by this phenomenon are not identical and can be of different sexes. Even the sperm fertilizing the two eggs in this phenomenon are seperate. Fraternal twins even do not share the same placenta, each of the them makes their own placenta.
Answer: a. Secondary
Explanation:
Once soil is already present all you need are animals to re establish the ecosystem
Answer:
A. organisms die or leave an area
D development of vestigial structures.
Hope this helps
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-Kayla <3
