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 19 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
YES! Correct, THANKS for helping me on my review

Viet Thy

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

“Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi “Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi
Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa
Adults in the middle-aged group (37–42 years) score higher on measures of generativity than either ... Adults in the middle-aged group (37–42 years) score higher on measures of generativity than either ...
Climate models Climate models
Temperature gradient generates a global pattern of circulation Temperature gradient generates a global pattern of circulation
The Cs-131 nuclide has a half-life of 30. years. After 139 years, about 3.0 grams remain. The ... The Cs-131 nuclide has a half-life of 30. years. After 139 years, about 3.0 grams remain. The ...
Video: How to find out if a population is evolving?

For a complete list of videos, visit our video library