Low dissolved oxygen concentrations that occur in many bodies of water when nutrients stimulate the growth of algae that subsequently die and are decomposed by oxygen-using bacteria.
Latitude.
It is measured with 180 degrees imaginary lines that form circles around the Earth east west, parallel to the Equator. These lines are known as parallels.
Yes because rivers are important for trade and even things like fresh water and transport.
Answer:
A
Explanation:
China produces 30 percent of the world's rice production
