Answer:
C. Carbon dioxide has increased as a result of increased human activities.
Explanation:
THESE ARE THE OPTIONS FOR THE QUESTION BELOW
A. Carbon dioxide is emitted from fertilizers used in farming.
B. Other greenhouse gases trap more heat than carbon dioxide.
C. Carbon dioxide has increased as a result of increased human activities.
D. Carbon dioxide is emitted from commercial refrigeration.
Global warming can be regarded as
long-term heating of climate system of the Earth, this has been a point if observation even as far as pre-industrial period arround 1850. This global warming can be attributed to activities such as human activities as well as primarily fossil fuel burning, and as a result of this there is rise in heat-trapping, increase in greenhouse gas levels arround the atmosphere of the Earth. Human activities that brings about increase of Carbon dioxide concentration in the atmosphere are ;
✓ burning of oil as well as coal and gas,
✓deforestation
Hence, many scientists believe that carbon dioxide has likely contributed more to global warming than other greenhouse gases as a result of increase in Carbon dioxide which is as a result of increased human activities.
Greenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth's surface and reradiating it back to Earth's surface, thus contributing to the greenhouse effect. Carbon dioxide, methane, and water vapour are the most important greenhouse gases.
