Answer:
<u><em>River valley civilizations</em></u>
Explanation:
They were centred around various river valleys as their main source of livelihood and the flourished only due tiote river valley on which they were based. Like the harappan in Indus Valley, The yellow river (Huang He), the Mesopotamia around Tigris and Euphrates and the egyptian Nile.
Explanation:
The Phanerozoic eon is separated into three eras: the Paleozoic, Mesozoic, and Cenozoic eras
The waxy coating on their leaves is being damaged by B) acid rain <span />
Industry such as mining agriculture or forestry that is concerned with obtaining or providing natural raw materials for conversation into commodities and products for the consumer
2 definitions:
an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
a celestial body orbiting the earth or another planet
