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Today, the Earth's axis is tilted 23.5 degrees from the plane of its orbit around the sun. But this tilt changes.
Answer:
"water, air, sunlight, soil, plants, microorganisms, insects and animals. Ecosystems may be terrestrial – that is, on land – or aquatic. Sizes of ecosystems vary; they could entail a small puddle or an enormous swath of desert. Likewise, natural ecosystems can look quite different from one another."
Explanation:
High density of people in Hong Kong, New york City, all big citys in India like Delhi or calcuta