What is the definition of respiration?(1 point)
Responses
A. the process by which animals maintain body temperature
B. the process by which organisms obtain energy by taking in oxygen and releasing carbon dioxide
C. the process by which dead plants break down and return carbon to the soil
D. when greenhouse gases trap heat in Earth's atmosphere
B. the process by which organisms obtain energy by taking in oxygen and releasing carbon dioxide
Today, CO2 is at the highest concentration is has ever been. What do scientists attribute this exponential increase around the 1860s to?
(1 point)
Responses
A. Increased agriculture and farm animal reproduction
b. Glaciers melting and causing ocean acidification
c. Combustion of fossil fuels by humans
d. Deforestation by humans
c. Combustion of fossil fuels by humans
How do our oceans help reduce the effects of climate change felt on the land and in the atmosphere?(1 point)
Responses
A. They absorb and hold heat and carbon dioxide
B. They adjust pH so that acidification does not affect the organisms 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
A. They absorb and hold heat and carbon dioxide
What is the definition of ocean acidification?(1 point)
Responses
A. the increase in CO2 (carbon dioxide) in ocean waters due to oil spills
B. the increase in acidity of the ocean due to added CO2 (carbon dioxide)
C. the increase in CO2 (carbon dioxide) in ocean waters due to fossil fuel combustion
D. the increase in CO2 (carbon dioxide) in the air due to its release from the ocean