Answer:
they created oxygen for living species
Answer:
i dont know the answer i think its D
Explanation:
The answer is Silicates
Basically, the moon is made up of similar ingredients as the earth because it is formed from the same remains of an impact that destroyed the earth. Among the more abundant elements known to be present on the moon’s surface include, silicates, which are anions that contain both silicon and oxygen. The same way they are in abundance on the moon is the same way they are in abundance on earth and make up approximately 90% of the earth’s crust
The level below which the ground is saturated with water.
<span>The earliest civilizations that arose in the world developed in the late fourth and the third millennia BC in parts of Asia and north Africa. The three large alluvial systems of the Tigris-Euphrates, the Nile and the Indus supported three great ancient civilizations. Other urban communities also arose during this time. For example, settlement mounds known as tells or tepes, occur in almost all major valleys between Iraq and Pakistan in one direction and between the Caspian Sea and the Indian Ocean in the other and many that have been explored are known to have been occupied in the same period. However, unlike the great civilizations of Egypt, Mesopotamia and Indus, these communities did not form part of a unified economic system, and these small units, though clearly able for a time to support large, wealthy and organized societies, were much weaker than the vast civilizations of the alluvial lowlands. </span>
