The atmosphere is the source of carbon dioxide, which is utilized by plants in photosynthesis reduced to form carbon compounds. The total mass of carbon currently in the atmosphere is about 7×1017 g, ie, 700000 million tonnes. Oceans regulate the CO2 content in the atmosphere and thus play a very important role. Sea water contains 50 times more CO2 than air, ie, about 70% of total global carbon is found in oceans. This is in the form of carbonates and bicarbonates.
About 70 % of total global carbon is found in
NEET UG 2008 — Botany Ecosystem
2008mcqmedium
About 70% of total global carbon is found in
Official previous-year question
Held on 30 Apr 2008 · Verified 9 Jul 2026.
Options
- A
grasslands
- B
agro-ecosystems
- C
oceans
- D
forests
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