Online University Courses

Global-Warming MCQs

Global-Warming MCQ - Topics

Carbon Dioxide and Carbon Cycle MCQ with Answers PDF Download

Learn Carbon Dioxide and Carbon Cycle Multiple Choice Questions (MCQ Quiz), Carbon Dioxide and Carbon Cycle quiz answers PDF to learn global warming course for global warming online classes. Greenhouse Effect Multiple Choice Questions and Answers (MCQs), Carbon Dioxide and Carbon Cycle quiz questions for colleges that offer online classes. Carbon Dioxide and Carbon Cycle Book PDF: chlorofluorocarbons (cfcs) and ozone, carbon dioxide and carbon cycle, gases with an indirect greenhouse effect test prep to learn online certificate courses.

"What are two main processes which occur in natural carbon cycle?" MCQ PDF: carbon dioxide and carbon cycle App APK with photosynthesis and decomposition, photosynthesis and respiration, photosynthesis and combustion, and photosynthesis and metabolism choices for colleges that offer online classes. Study carbon dioxide and carbon cycle quiz questions for merit scholarship test and certificate programs for free online college courses.

MCQ on Carbon Dioxide and Carbon Cycle Quiz

MCQ: What are two main processes which occur in natural carbon cycle?

Photosynthesis and decomposition
Photosynthesis and respiration
Photosynthesis and combustion
Photosynthesis and metabolism

MCQ: The concentration of Carbon dioxide has increased; from

300 ppm to 370 ppm
280 ppm to 370 ppm
200 ppm to 370 ppm
380 ppm to 370 ppm

MCQ: Which isotope of carbon is very rare and radioactive?

Carbon-12
Carbon-13
Carbon-14
Carbon-11

MCQ: Planktons live on the surface of:

Pond
River
Ocean
Lake

MCQ: The size of 'plankton' is:

four-thousandth of a millimetre
three-thousandth of a millimetre
one-thousandth of a millimetre
Two-thousandth of a millimetre