Answer: <u>A metal </u>is rare on Earth but relatively abundant in iron-rich meteorites. It has been found in widespread layers on Earth and it's date of deposition coincides with the major extinction of life on Earth 65 million years ago, possibly indicating a connection between a large impact and this extinction.
Explanation: That metal would be iridium
One criteria that is a necessary condition for a happy and successful society is a suitable living space. A landscape with a decent climate, fertile soil, plenty of food supply, and a source of water is necessary. Something that makes society hard to be successful is expanding human potential.
Answer: For example, when you go to the beach, the waves hit the rocky shore, causing it to weather or chip off. There is salt on those rocks, but when the waves hit those rock it weathers it away and thats how we have a salty ocean.
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