The gas released during anaerobic degradation of vegetation may lead to

What would have happened if the greenhouse gases were totally missing in the earth's atmosphere? Discuss.

For dry cleaning of clothes,instead of tetrachloroethene,which is carcinogenic in nature,which of the following solvents can be used?

Which among the following is not a component of photochemical smog?

What percentage of the total atmosphere is occupied by the homosphere?

The concentration of fluoride,lead,nitrate and iron in a water sample from an underground lake was found to be $1000 \ ppb, 40 \ ppb, 100 \ ppm$ and $0.2 \ ppm,$ respectively. This water is unsuitable for drinking due to high concentration of: