The first step to take in order to help reduce pollution is option C. Maintain a clean, healthy home as an example for others to follow. Change should start with yourself. In order to promote cleanliness and to reduce pollution, you should start it with yourself before encouraging others to do so. In that way, people would also be motivated and inspired to change and improve their ways.
Answer:The placenta begins to develop to provide food and oxygen.
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Answer: A Hope it helps :)
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