Answer: Eutrophication is an enrichment of water by nutrient salts that causes structural changes to the ecosystem such as: increased production of algae and aquatic plants, depletion of fish species, general deterioration of water quality and other effects that reduce and preclude use
Explanation:
IRRIGATION DITCHES WERE USED TO PREVENT THE RIVER FROM FLOODING
Provided economic aid to Europe = Marshall Plan
Outlined that ways to contain communism = Truman Doctrine
Approved the partition of Palestine = United Nations
Strengthened Soviet control over Eastern Europe = Warsaw Pack
Answer:
The Cattle Drivers
Explanation:
<u>The cattle ranchers wanted to sell their cattle in the East and North. They could get better prices because the demand was high and the supply was low. Cattle ranchers needed to get their cattle to railroads that were often hundreds of miles from the cattle ranches.</u>
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Hope this helps :)