Author Question: The two opposing forces determining the vertical position of a parcel of air are A) buoyant force ... (Read 180 times)

appyboo

  • Hero Member
  • *****
  • Posts: 527
The two opposing forces determining the vertical position of a parcel of air are
 
  A) buoyant force and gravitational force.
  B) centrifugal force and coriolis force.
  C) coriolis force and buoyant force.
  D) gravitational force and pressure gradient force.

Question 2

Summarize the recent changes in the Arctic and Antarctic regions as a result of climate change.
 
  What will be an ideal response?



Jody Vaughn

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

A

Answer to Question 2

The Arctic region is defined by the July 10C (50F), whereas the Antarctic region is defined by the February July 10C (50F). The Arctic Ocean is covered by pack ice, whereas Antarctica is a continent covered by essentially one giant ice sheet. The Antarctic region is generally cooler than the Arctic region.
Since 1970, about half of the Arctic sea-ice volume has disappeared due to warming. There has also been the opening of the Northeast Passage during the summer. These changes affect surface albedo and the overall global climate.
Another phenomenon is ice sheet darkening, which changes the reflectivity of snow and ice. There may be several causes, such as exposed land, water and vegetation; black carbon from wildfires, and snow metamorphism.
There has also been an increase in meltponds in polar regions, as well as supraglacial lakes.
Another sign of climate change related affects is the breakup of ice shelves in the polar regions.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

For a complete list of videos, visit our video library