An open answer to the desired increase in grain would include :- increase the number of crop cycles per year, increase the size of the individual grains, increase the number of grains per head of grain, increase the number of heads of grain per plant, increase the type of land on which grain could be grown, increase the climate range over which grain may be grown.
In fact, folk are working on most of these.
Even esoteric aims such as converting plant metabolism to C4 photosynthesis instead of C3, is being worked on.
And the contributions of cross-breeding between grains is another fruitful area.
Increase in food production and distribution.
cutting down grain
eating much beans regularly
1970 in india to increase food production
to have good and highly yield seeds
The enormous increase in the production of food grain (especially wheat) during the last 3 decades, due to use of seeds of HYV (=High Yield Varieties), higher dose of fertilizers and pesticides, and irrigation is known as green revolution.
trade and transportation and the things they had around them
Yes
Green Revolution
digging irrigation canals
This is from the oxidation of food during respiration in body cell.Any increase activity,muscle action which increase respiration will increase heat production.
55%