<span> Greenhouse gases were not historically present in the atmosphere.</span>
Answer:
look
Explanation:
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Answer:
D. Visible Light
Explanation:
D is the right answer because visible light is perceived by humans as color and the rest aren't visible at all. For example, if you broke a bone and have to have an X-ray done, you can't see the x-rays. When you are heating something in the microwave, you can't see the waves. And when you are listening to the radio in the car, you also can't see the waves.
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Answer:
A compound can only be seperated through chemical means while a mixture are formed when two substances are added together without chemical bonds being formed.
Explanation: