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 72 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
Great answer, keep it coming :)

daiying98

  • Member
  • Posts: 354
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

The effects of elevated atmospheric CO2 on insect herbivores. The effects of elevated atmospheric CO2 on insect herbivores.
Uranus's southern hemisphere in approximate natural colour (left) and in shorter wavelengths (r Uranus's southern hemisphere in approximate natural colour (left) and in shorter wavelengths (r
Toddler: 1–3 years. Toddler: 1–3 years.
Atmospheric properties include temperature, pressure, and humidity Atmospheric properties include temperature, pressure, and humidity
An overlapping record extends back thousands of years of tree ring width An overlapping record extends back thousands of years of tree ring width
Earth’s Oldest Preserved Rocks – 3.8 Billion Years Old, Greenland Earth’s Oldest Preserved Rocks – 3.8 Billion Years Old, Greenland
Video: Control of ventilation rate by other brain centers (posts, hypothalamus & cerebral cortex)

For a complete list of videos, visit our video library