Geographical conditions(temperature,type of soil, amount of rainfall) necessary for the growth of
1. green gram
2. castor seed
3. cotton seed
4. groundnut
5. mustard

I found a couple of them for you, now you just have to do the reading on your own :

Cotton - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Cotton)
Mustard seed - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Mustard_seed)