Question

Why does the biogeochemical cycle have to exist ?? Give its importance

Answer 1

ғᴏᴜʀ ᴍᴏsᴛ ɪᴍᴘᴏʀᴛᴀɴᴛ ʙɪᴏɢᴇᴏᴄʜᴇᴍɪᴄᴀʟ ᴄʏᴄʟᴇs

Biochemical cycles are basically of two types:  

 

a) Gaseous cycles like carbon (as carbon dioxide), oxygen, nitrogen, etc.  

 

b) Sedimentary cycles like sulphur, phosphorus, etc.  

 

In gaseous cycles, the elements have a main reservoir in the gaseous phase, and the reservoir pool is the atmosphere or water. The bio genetic materials involved in circulation pass through a gaseous phase before completing the cycle.  

 

In sedimentary cycles, the elements main reservoir pool is lithosphere and the bio genetic materials involved in circulation are non-gaseous. The sedimentary cycles are usually very slow as the elements may get locked up in rocks and go out of circulation for long periods.

ʙᴇ ʏᴏᴜʀs..............^_^

Answer 2

Most of the people are employed in the primary sector this is because in the secondary sector ,when the development increases 6 times then the employement increases 2.5 times only.In tertiary sector, if the development increases 13 times the employement increases 5 times only...

Hope it helps!