Why is the world roundim serious

One of the effects of mass is that it attracts other mass. For small objects, like your computer, your car, and even a building, the force of gravity is tiny. But when you have millions, and even trillions of tonnes of mass, the effect of the gravity really builds up. All of the mass pulls on all the other mass, and it tries to create the most efficient shape… a sphere.

Brainliest plz

Scientists don't really know why the world is round but, it has been shown, by the other planets, that all it takes is a point of great enough gravity to start a planet. Things get pulled to that specific point and that is how the earth started off, it just ended up to stop at this size and this shape.

Explanation:

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b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.