What causes the northern and southern lights?

Earth's atmosphere is mostly made up of nitrogen and oxygen. Once the solar particles reach Earth's atmosphere, they collide with atoms of nitrogen and oxygen, stripping away their electrons to leave ions in excited states. These ions emit radiation at various wavelengths, creating the characteristic colors.

Explanation:

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

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d. planting trees

the trees take in carbon to make oxygen.