The number of the correct statements regarding organic farming, amongst the following, are:

I:	Organic farming encourages crop diversity and often employs polyculture.
II:	Organic farming relies heavily on the natural breakdown of organic matter.
III:	Organic weed management promotes weed elimination, rather than weed suppression
IV:	Pest are used under Integrated Pest Management
V:	Raising livestock and poultry, for meat, dairy and eggs, is another traditional farming activity that complements growing.
VI:	It promotes use of genetically engineered plants and animals.

1. Three
2. Four
3. Five
4. Six

The accidental leakage of radioactive wastes occurred in the “Three Mile Island” and “Chernobyl” respectively in:

The environmental effects of global warming include all the following except:

The common misconceptions regarding ozone depletion include:

Why is carbon dioxide regarded as a greenhouse gas?

The levels of carbon dioxide is consistently increasing over the last 100+ years mainly because:

The thawing of permafrost in many areas of the tundra biome as a result of global warming is of concern mainly because:

The highest concentration of polycarbonated biphenyls [PCBs] in a lake is expected in:

The addition of fertilizers is frequently required in agricultural lands but not in wild mainly because:

What is most likely to occur due to continued global warming?