Plants can be engineered to be temperature resistant or produce higher yields. This provides greater genetic diversity in different regions where climate limits productivity. Another good reason to have GMO crops planted is to add nutritional value to crops that lack necessary vitamins and nutrients. There are areas around the world that rely on rice or corn crops, and other plant genes may be added to the crop to increase the nutritional value of that food. This will help malnourished populations receive more nutrients from their diet.