« previous next »

Author Question: In addition to carbon dioxide, _______________ and _______________ have risen above their ... (Read 26 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?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

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?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Carbon Cycle Carbon Cycle
Geometry of bonds when carbon is covalently linked to three or four other atoms Geometry of bonds when carbon is covalently linked to three or four other atoms
A complete kinetic scheme for a single nucleotide addition A complete kinetic scheme for a single nucleotide addition
Carbon dioxide: The anthropogenic greenhouse gas of primary concern Carbon dioxide: The anthropogenic greenhouse gas of primary concern
Sulfur dioxide is a toxic gas, has a distinct, pungent odor, and contributes to acid rain and ... Sulfur dioxide is a toxic gas, has a distinct, pungent odor, and contributes to acid rain and ...
The carbon cycle The carbon cycle
Video: Transferring genes into plants Animation

For a complete list of videos, visit our video library