Which statement describes the relationship between plants, animals, and the carbon cycle?
Plants use carbon and release oxygen, and animals release carbon and use oxygen.
Animals use carbon and release oxygen, and plants release carbon and use oxygen.
Animals use carbon through respiration, and plants fix carbon through photosynthesis.
Plants use carbon when they decompose, and animals release carbon when they decompose.

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evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.