Excess carbon dioxide is harmful to the oceans because
Responses
A they product carbonic acid form the atmospheric carbonthey product carbonic acid form the atmospheric carbon
B it removes most of the dissolved oxygenit removes most of the dissolved oxygen
C it decreases the rate of evaporationit decreases the rate of evaporation
Question 2
Which of these has the greatest impact on increased levels of atmospheric carbon dioxide?
Responses
A volcanoesvolcanoes
B burning fossil fuelsburning fossil fuels
C agricultureagriculture
Question 3
What is used as a "fingerprint" to distinguish the carbon dioxide produced from fossil fuels?
Responses
A heavy carbon-13heavy carbon-13
B ozoneozone
C carbon monoxide