Northeast is the US region known as the breadbasket of America. It is a major agricultural region known for growing wheat, corn, and oats. It is also an important region for manufacturing and supports the US auto industry.
France has a usable agricultural area of nearly 74 million acres (30 million hectares), more than three-fifths of which is used for arable farming (requiring plowing or tillage), followed by permanent grassland (about one-third) and permanent crops such as vines and orchards (about one-twentieth).
Answer:
The pressure at the top of Pikes Peak is much lower (only about 60% that at sea level).
Explanation:
Atmospheric pressure decreases with altitude. The higher a location is in the mountains, the lower the atmospheric pressure will be. Pressure continues to decrease until the boundary with outer space where there is no air pressure at all and the atmosphere officially ends. Mountain climbers that scale the highest peaks in the world must bring oxygen tanks because of the scarcity of air at the roof of the world.
In North America- prairies
South America-pampas
a) <u>TWO important causes for the variation in the temperature and/or salinity of an estuary as follows:</u>
Salinity will vary hourly, because of the tides. Temperature will vary depending on the time of year. Solar radiation, different in winter than in summer, changes the temperature.
b) <u>TWO roles that coastal wetlands play Ecologically</u>
- they provide a habitat for various wildlife
- provide nutrient cycling, or soak up excess nutrients.
<u>TWO roles that wetlands play Economically</u>
- they provide a location for fishing and other sources of recreation
- reduce flooding and erosion.
c) <u>THREE ways in which humans have had a negative impact on or have degraded coastal wetlands as follows:</u>
- They have removed wetlands for agricultural purposes
- more use of groundwater, which reduces the balance of the ecosystem
- have water pollution, plants harvest, and birds hunt.
d) Overused groundwater can be reduced by charging user fees to those who use it, as well as increasing the number of wildlife refugees, which will restrict available land for groundwater use.
<u>Explanation:</u>
Estuary is a land form that formed in the lower course of a river where river enters into the sea. Here temperature and salinity varies with solar radiation as the intensity of sun rays different season wise. During the time of tides salinity level does fluctuate.
Wetland is a very important feature of environment. It is also known as the kidney of environment and it acts as a natural habitat for the animals and economically important zone for the fishing. It is also a recreation zone. With increasing population over burden on agricultural land enhances adversities on environment.
