Question

The bus conductor's cheerful countenance was a sound investment.explain​

Answer 1

Answer:

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Answer 2

Answer:

Explanation:

Urea is the main nitrogenous waste in the human blood, through filtration is it removed from the blood. Explanation: Urea is the major nitrogenous waste in the humans. It's removed from the body via filtration in the kidneys, transport to temporary storage in the urinary bladder, and removal by urination. the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.