The Nervous System and The Endocrine System.
Answer: Sex cell is the correct answer.
Answer:
Life, water, huge population of living organisms, biodiversity of species.
Explanation:
Earth is the only planet in our solar system that can maintain living organisms. It is the only planet in our solar system that is suitable for humans and animals to live on. Only planet with water suitable for a human/animal to drink. Many different types of species and organisms live on earth. And there is a large amount of living organisms living on earth.
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