Clean Technology.

Explanation

(i) Human being has made a very fast progress in technology.
(ii) However, environmental pollution is also increasing with the same speed.
(iii) Microbes have the natural ability of decomposing the manmade chemicals.
(iv) Hydrocarbons and some other chemical are transformed with the help of these abilities.
(v) Some microbes remove sulphur from the fuels.
(vi) Metals like copper , iron , uranium , zinc etc. leach into the environment from low quality metalloids . These are converted into compounds before leaching with the help of Thiobacilli and Sulphobachilli.