brib0306
contestada

1.Excess carbon dioxide is harmful to the oceans because
A.they product carbonic acid form the atmospheric carbon
B.it removes most of the dissolved oxygen
C.it decreases the rate of evaporation

2. Which of these has the greatest impact on increased levels of atmospheric carbon dioxide? A.volcanoes
B.burning fossil fuels
C.agriculture

3. What is used as a "fingerprint" to distinguish the carbon dioxide produced from fossil fuels? A.heavy carbon-13
B.ozone
C.carbon monoxide