Which of the following is not a theory supporting global warming?

a.
it is predicted that the average temperature will rise 1.4° c or more over the next 100 years.

b.
human activity has increased greenhouse gases.

c.
over the last 100 years the earth has warmed by 0.74° c

d.
carbon dioxide is an insignificant greenhouse gas.

select the best answer from the choices provided
a
b
c
d

The correct answer is - d. Carbon dioxide is an insignificant greenhouse gas.

To say that the carbon dioxide is an insignificant greenhouse gas is not a theory that is supporting the global warming, not to mention the fact that it is the total opposite.

The carbon dioxide (CO2) is actually the gas the contributes the most to the greenhouse effect. The reason for that is that the CO2 is a gas that has the property to trap the heat, thus the heat instead going back to the space, it is actually remaining in the atmosphere. That results in warmer temperatures on a global scale, as we can witness in the past century with the increasing amounts of CO2 into the atmosphere because of the human activities.

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