Question

All organic substance found in the biosphere
necessarily contain
(a) silica (b) carbon
(c) oxygen (d) nitrogen

Answer 1

Answer:

All organic substance found in the biosphere

necessarily contain

(a) silica

(b) carbon ✔✔

(c) oxygen

(d) nitrogen

Answer 2

All the organic substances found in the biosphere  necessarily contain (b) carbon

• In the terrestrial biosphere some of the carbon present is the organic carbon, while about 1/3 of the soil carbon is contained in inorganic forms like the calcium carbonate.
• An organic carbon is the key component of all the organisms living on the earth. Carbon is present in the plants and trees contained in the biosphere.
• Plants use carbon dioxide from the atmosphere during photosynthesis to form the building blocks of food. Carbon dissolved in ocean water and reservoirs is also found in the hydrosphere.