Answer:
1. phytoplankton blooms
Explanation:
- A dead zone is a zone that is created by the presence of the dead and decomposing matter of the plant an abiotic component that depletes the oxygen and thereby creating a thick layer of nutrient-rich deposits in the aquatic environment that does not support the marine and fish life.
- They may result from agricultural, industrial and urban flows. And the changes that occur with the climate changes and the seasonal cycles of the earth. There are four types of dead zones classified on their lengths.
<u>Permanent </u><u>dead zone i.e the rarely exceed 2 milligrams per liter.
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<u>Temporal </u><u>dead zones i.e the short-lived dead zone that lat flour hours a day.
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<u>Seasonal </u><u>dead zones occur annually mostly in the summer months.
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<u>The </u><u>hypoxic </u><u>zone that occurs in the night time.
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The baltic seas, Chesapeake bays, Lake Erie, and the other zone are affected by these blooms of algae and other foreign substances.
<span>A. convergent boundaries
Convergent plates are two tectonic plates that are colliding as they move toward each other. There are several types of converging plate boundaries. Oceanic</span>
Answer:
Most early cities developed in southern Mesopotamia because it had more fertile land.
Explanation:
A is not correct because Mesopotamia was poor in natural resources, it actually had just two primary ones, but those two were the most important at that time.
B is correct because the abundance of fertile land along the Tigris and Euphrates enabled the developement of societies, as the people were able to produce much more food than they needed and used it for trade to obtain other goods.
C is not correct because civilization was only able to develop because of the abundance of fertile land and water.
D is not correct because the natural borders don't provide conditions for the development of civilization, but just make it easier as they eliminate the threat of invasion.
Answer:
A, D Is your answer
Explanation
Researching bones, animals, and DNA can tell you a lot about the
colonial history of a region. Even clothing, vehicle parts, and
plant life can tell how people lived in colonial times.
Answer:
The growth in urban areas comes from both the increase in migration to the cities and the fertility of urban populations.The urbanization of the world is likely to slow population growth. It is also likely to concentrate some environmental effects geographically
Explanation:
