Register
According to scientific data on climate change, what levels have risen by 30% over the past 200 years? A. ozone B. argon C. carbon dioxide D. krypton
75.7k views
4 votes
According to scientific data on climate change, what levels have risen by 30% over the past 200 years?

A.
ozone
B.
argon
C.
carbon dioxide
D.
krypton

User VincentQT
by
6.9k points

2 Answers

4 votes
Carbon dioxide i am think 
User Peer
by
8.0k points
5 votes
                                   its carbon dioxide that has risen
User Jonathan March
by
7.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.6m questions

10.2m answers

Other Questions

Which of the objects is living or nonliving: Bacteria, virus, moss, you, a lemon seed, the air, bread, lettuce and rocks?
What are three important types of forces
Two methods of active transport
How can paleontologists help us understand the past
What is the phenotype of a heterozygous person using T for tall and t for short
Link Copied!