Fossils are the most reliable source of information regarding the evolution of life on Earth. Fossils also provide information on major geological events and previous climates. The age of rock layers can be determined using index fossils.
<span>A greenhouse gas is a gas that contributes to the greenhouse effect by absorbing infrared radiation. It is important because it keeps the Earth's surface heated and able to maintain life upon it.</span>
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I think it’s correct if it’s not then I’m sorry I tried