Its urgent please anyone give the brief answer

10. Write the root cause of water scarcity.

:)

Explanation:

Water scarcity is the lack of sufficient available water resources to meet the demands of water usage within a region. Water shortages may be caused by climate change, such as altered weather patterns including droughts or floods, increased pollution, and increased human demand and overuse of water.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

a symbiotic relationship with the mitochondria