« previous next »

Author Question: In addition to carbon dioxide, _______________ and _______________ have risen above their ... (Read 15 times)

tingc95

  • Hero Member
  • *****
  • Posts: 556
on: Jul 13, 2018
In addition to carbon dioxide, _______________ and _______________ have risen above their pre-industrial levels in Earths atmosphere.
   
  Fill in the blank with correct word.

Question 2

Earth has experienced _______________ ice ages over the past two million years.
   
  Fill in the blank with correct word.


tranoy

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: methane, nitrogen oxides

Answer to Question 2

ANSWER: 20, twenty


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

The ovaries. In addition to producing ova, the ovaries secrete the female sex hormones, estrogen and The ovaries. In addition to producing ova, the ovaries secrete the female sex hormones, estrogen and
President-elect Barack Obama 150 million tiny carbon nanotubes President-elect Barack Obama 150 million tiny carbon nanotubes
Carbon Orbitals Carbon Orbitals
Carbon dioxide: The anthropogenic greenhouse gas of primary concern Carbon dioxide: The anthropogenic greenhouse gas of primary concern
carbon cycle carbon cycle
A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta-minus decay. How much energy (in ... A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta-minus decay. How much energy (in ...
Video: Isovolumetric VC, Ventricular ejection, Isovolumetric & Passive ventricular filling

For a complete list of videos, visit our video library