« previous next »

Author Question: As of 2015, what is the approximate CO2 level in Earths atmosphere? a. 100 ppm b. 200 ppm c. ... (Read 44 times)

mckennatimberlake

  • Hero Member
  • *****
  • Posts: 559
on: Jul 13, 2018
As of 2015, what is the approximate CO2 level in Earths atmosphere?
   a. 100 ppm
   b. 200 ppm
   c. 400 ppm
   d. 800 ppm
   e. 1200 ppm

Question 2

Approximately when did the rapid increase in human-produced atmospheric CO2 begin?
   a. 1900
   b. 1930
   c. 1950
   d. 1980
   e. 2000


randomguy133

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: c

Answer to Question 2

ANSWER: c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Blue light is scattered more than other wavelengths by the gases in the atmosphere, giving the Earth Blue light is scattered more than other wavelengths by the gases in the atmosphere, giving the Earth
Sources of SO2 Pollution in the Atmosphere Sources of SO2 Pollution in the Atmosphere
Shy children often have a high arousal level in novel social situations. Over time, parents can help ... Shy children often have a high arousal level in novel social situations. Over time, parents can help ...
A visual inspection on this battery showed that the electrolyte level was below the plates in all ... A visual inspection on this battery showed that the electrolyte level was below the plates in all ...
Projections of global temperature depend heavily on the level of future greenhouse gas emissions Projections of global temperature depend heavily on the level of future greenhouse gas emissions
A Drug’s Plateau Level A Drug’s Plateau Level
Video: Transcription - Introns and exons

For a complete list of videos, visit our video library