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is this multiple choice??
Answer:
Human could use an electric saw to cut trees, if we keep cutting trees we will receive less oxygen since trees uses our carbondioxide that we exhale, and the tree will exhale their oxygen in the air if there isn't enough oxygen some insects/animals will die that could potentionally break the food cycle.
idk if this answers your question.
Answer:
The production of elements heavier than Iron takes place by adding neutrons to the atomic nuclei. These neutral particles do not feel any electrical repulsion from the charged nuclei. They can therefore easily approach them and thereby create heavier nuclei. This is indeed the way the heaviest chemical elements are built up.
There are actually two different stellar environments where this process of "neutron capture" can happen.
Explanation: