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

Author Question: Average atmospheric CO2 concentrations have ____ over the past 100 years. A) slightly decreased B) ... (Read 106 times)

tfester

  • Hero Member
  • *****
  • Posts: 534
on: Jul 13, 2018
Average atmospheric CO2 concentrations have ____ over the past 100 years.
 A) slightly decreased
  B) remained constant
  C) significantly decreased
  D) increased

Question 2

Carbon dioxide is removed from the atmosphere through the process of ____.
 A) fuel combustion
  B) respiration
  C) volcanic activity
  D) photosynthesis


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

memslove

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jul 13, 2018
Answer to Question 1

D

Answer to Question 2

D


tfester

  • Member
  • Posts: 534
Reply 2 on: Jul 13, 2018
Gracias!

bblaney

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Measurements of solar cycle variation during the last 30 years Measurements of solar cycle variation during the last 30 years
Older adults may grieve intensely over the loss of a person or situation that has been a part of the Older adults may grieve intensely over the loss of a person or situation that has been a part of the
Decreased Activation of the Subgenual ACC After a Variety of Successful Treatments for Depression Decreased Activation of the Subgenual ACC After a Variety of Successful Treatments for Depression
Diet Soda's Consumption's Association with Increased (not Decreased) Prevalence of ... Diet Soda's Consumption's Association with Increased (not Decreased) Prevalence of ...
The Critical Weather Maker: Atmospheric Stability The Critical Weather Maker: Atmospheric Stability
An overlapping record extends back thousands of years of tree ring width An overlapping record extends back thousands of years of tree ring width
Video: Automated external defibrillator (AED)

For a complete list of videos, visit our video library