Question

1. choose the correct answer.

what is the purpose of water treatment plants?
they clean wastewater so it is safe to use again.
they make rivers and lakes dirtier.
they increase salt levels in sea water.
they create more wastewater.

1. choose the correct answer.

how are some facilities using new technology for better resource management?
they help increase water pollution.
they make water more expensive.
they help remove salt and other minerals from ocean water.
they increase the amount of water wasted.

Explanation:

Question 19

Water treatment plants are designed to purify wastewater (like sewage or used water) to remove contaminants, making it safe for reuse or release back into the environment. The other options are incorrect: making water bodies dirtier, increasing sea salt levels, or creating more wastewater go against their purpose.

New technology in facilities for resource management often aims to improve water usage, like desalination (removing salt from ocean water) to get usable freshwater. The other options (increasing pollution, making water costlier, wasting more water) are against better resource management goals.

Answer:

They clean wastewater so it is safe to use again.

Question 20