7. The concentration of carbon dioxide in our atmosphere began to increase exponentially around 1860. Today, c02 is at the highest concentration it has ever been. What do scientists attribute this exponential increase around the 1860 to?
a) Increased agriculture and farm animal reproduction
b) Deforestation by humans
c) Combustion of fossil by human
d) Glaciers melting and causing ocean acidification
8.. How do our oceans help reduce the effects of climate change felt on the land and in the atmosphere.
a) They absorb and hold heat and carbon dioxide
b) They adjust pH so that acidification does not affect the organism living there.
c) they release carbon dioxide back into the atmosphere and cool the surrounding area
d) they create winds from ocean currents to cool the land and atmosphere
7. c) Combustion of fossil by human
8. a) They absorb and hold heat and carbon dioxide