This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: How does the modern global climate compare with that of 400,000 and 800,000 years ago? How do we ... (Read 8 times)

Lobcity

  • Hero Member
  • *****
  • Posts: 524
on: Jul 15, 2018
How does the modern global climate compare with that of 400,000 and 800,000 years ago? How do we know?
 
  What will be an ideal response?

Question 2

How did individuals act to help scientists in the Caribbean Sea?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

raili21

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 15, 2018
Answer to Question 1

Ice cores in Greenland and the Antarctic have been analyzed for thickness and gas content, especially the content of carbon dioxide and methane, two greenhouse gases. Results of ice core analysis demonstrate that peaks in the levels of methane and global temperatures 400,000 and 800,000 years ago were very similar to the peaks that we see today. However, the peak carbon dioxide levels that we see today have never been seen in history.

Answer to Question 2

Citizen scientists (SCUBA divers) were trained to record which types of fish they see during dives. Scientist were then able to keep track of what is going on in the reef ecosystem.


Lobcity

  • Member
  • Posts: 524
Reply 2 on: Jul 15, 2018
Great answer, keep it coming :)

jojobee318

  • Member
  • Posts: 298
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

The declining age of menarche over the past 150 years has been measured in many European countries, The declining age of menarche over the past 150 years has been measured in many European countries,
The 2012 U.S. presidential campaign rang with “get tough” cries to end Iran’s nuclear capacity and c The 2012 U.S. presidential campaign rang with “get tough” cries to end Iran’s nuclear capacity and c
Carbon Dioxide, Trace Gases, and Climate Change Carbon Dioxide, Trace Gases, and Climate Change
Global Heat Transfer Global Heat Transfer
Understanding Weather and Climate, 5th Edition Understanding Weather and Climate, 5th Edition
Modern door designs Modern door designs
Video: Global warming and its effect on climate change

For a complete list of videos, visit our video library