Author Question: What is the importance of the Pleistocene ice age epoch to the modern day? What will be an ideal ... (Read 67 times)

haleyc112

  • Hero Member
  • *****
  • Posts: 600
What is the importance of the Pleistocene ice age epoch to the modern day?
 
  What will be an ideal response?

Question 2

Which layer of the planet forms 80 percent of Earth's total volume, and has an average density of 4.5 grams/cm3?
 
  A) continental crust
  B) oceanic crust
  C) mantle
  D) core



LegendaryAnswers

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

Answers may vary because of the long-lasting influence.
During the Pleistocene, almost a third of the Earth's land surface was buried beneath ice sheets and glaciers. This epoch began approximately 1.65 million years ago and consisted of at least 18 expansions and retreats of ice sheets over much of Europe and North America. The ice sheets disappeared about 7,000 years ago, leaving important landscape remnants behind.
Among the features that resulted from the Pleistocen glaciation are the five Great Lakes in North America, which formed as repeated glaciation enlarged and deepened stream valleys to form the future lake basins. Sea levels were also much lower (100 m; 330 ft) than today.
In areas that are now arid, there was much more rainfall, contributing to the formation of several very large pluvial lakes, such as Lake Bonneville and Lake Lahontan. The Great Salt Lake is one of several remnants of Lake Bonneville. As the conditions changes, these lakes mostly dried up.

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

For a complete list of videos, visit our video library