« previous next »

Author Question: In addition to carbon dioxide, _______________ and _______________ have risen above their ... (Read 65 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?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

General differences in food webs and carbon flow among terrestrial and aquatic ecosystems (adapted f General differences in food webs and carbon flow among terrestrial and aquatic ecosystems (adapted f
Hydration of a Carbon–Carbon Double Bond Hydration of a Carbon–Carbon Double Bond
Covalent bond- carbon rings Covalent bond- carbon rings
Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer ... Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer ...
In 1969 a UC Berkeley group fired a carbon nucleus at a californium target. Give In 1969 a UC Berkeley group fired a carbon nucleus at a californium target. Give
Silicon dioxide ingredient Silicon dioxide ingredient
Video: Introduction to Tuberculosis

For a complete list of videos, visit our video library