Answer:
Greenhouse effect is a natural process that warms up earth's atmosphere. Sun radiations when hit the ground are absorbed and some reflected back to the atmosphere and absorb by the greenhouse gases. ... But due to excessive human activities, greenhouse effect is high and making the earth hotter
Explanation:
Answer: This is the long-term carbon cycle. So, carbon takes up various forms: glucose in plants, carbon dioxide in the air and hydrocarbons like coal.
The tree of life is a metaphor which expresses the idea that all life is related by common descent. Charles Darwin was the first to use this metaphor in modern biology. It had been used many times before for other purposes. The evolutionary tree shows the relationships among various biological groups.
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