Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. ... During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote. Meiosis is the type of cell division that produces gametes.
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If all the plants on earth died, so would the people. ... When green plants make food, they give off oxygen. This is a gas that all animals must breathe in order to stay alive. Without plants, animals would have no oxygen to breathe and would die.
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Food?
i need 20 more characters so..
<span>Most of the nitrogen gas in Earth's atmosphere comes from _____.
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D. the breakdown of carbon dioxide</span>
