Answer:
C.
Explanation:
Indus river valley and Ganges river valley were two important valleys that helped civilization to flourish. The two cities that flourished on Indus river valley were Harappa and Mohenjo-Daro. The Ganges valley paved the way for the Aryans to flourish.
The statement which is not correct concerning the Indus and Ganges rivers is that these river systems reduced trade. Instead, the people in Indus and Ganges river valley were dependent on trade. The Indus river valley traded with various civilizations such as Persia, Mesopotamia and China. Whereas, the Ganges river systems were vital for river-based trade.
Therefore, option C is correct.
The correct option is OXYGEN.
The biogeochemical cycle refers to the pathway by which a chemical element is moved through both the abiotic and biotic compartment of an ecosystem. Each element has its own cycle through which it is recycled.
Marine organisms in the biosphere usually create carbonated shells which are rich in oxygen, when these organisms die they serve as a source of molecular oxygen.
Answer:
pretty sure it's d not sure also might be b but I think it's d
