Answer:
that lightning sparked chemical reactions in Earth's early atmosphere. The early atmosphere contained gases such as ammonia, methane, water vapor, and carbon dioxide. Scientists hypothesize
Answer:
Formed when a male gamete (sperm) and a female gamete (egg) combine.
Explanation:
A zygote is formed when these two gametes come together. This initial phase is carried out in the Zygotic stage.
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1.)C
2.)A
3.)D
4.)A
5.)D
6.)B
Hope this helps c: