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Carbon Dioxide and Carbon Cycle MCQ (Multiple Choice Questions) PDF Download
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The Carbon Dioxide and Carbon Cycle Multiple Choice Questions (MCQ Quiz) with Answers PDF (Carbon Dioxide and Carbon Cycle MCQ PDF e-Book) download to practice Global-Warming Tests. Study Greenhouse Effect Multiple Choice Questions and Answers (MCQs), Carbon Dioxide and Carbon Cycle quiz answers PDF to study online certification courses. The Carbon Dioxide and Carbon Cycle MCQ App Download: Free learning app for chlorofluorocarbons (cfcs) and ozone, carbon dioxide and carbon cycle, gases with an indirect greenhouse effect test prep for best online universities.
The MCQ: The concentration of Carbon dioxide has increased; from; "Carbon Dioxide and Carbon Cycle" App Download (Free) with answers: 300 ppm to 370 ppm; 280 ppm to 370 ppm; 200 ppm to 370 ppm; 380 ppm to 370 ppm; to study online certification courses. Practice Carbon Dioxide and Carbon Cycle Quiz Questions, download Apple e-Book (Free Sample) for online college courses.
Carbon Dioxide and Carbon Cycle MCQ (PDF) Questions Answers Download
What are two main processes which occur in natural carbon cycle?
- Photosynthesis and decomposition
- Photosynthesis and respiration
- Photosynthesis and combustion
- Photosynthesis and metabolism
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
Which isotope of carbon is very rare and radioactive?
- Carbon-12
- Carbon-13
- Carbon-14
- Carbon-11
Planktons live on the surface of:
- Pond
- River
- Ocean
- Lake
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
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