Answer:
4 billion years
Explanation:
Scientists have found the oldest known rocks on Earth. They are 4.28 billion years old, making them 250 million years more ancient than any previously discovered rocks. Earth formed about 4.6 billion years ago from a disk of gas and dust circling the sun.
Answer:
Fertilizers are good source of nutrients
Explanation:
people are dependent on farmer, farmers need fertilizers to grow fast so
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The type of roch that makes up the andes mountains in south america are called igneous rocks
