Answer:
refrigeration and gmos (this is based on research but it is souly opinion based because it all depends on what you think is the most important. please accept this answer with discretion.)
Explanation:
refrigeration because it helped improve shelflife for food all across the world.
gmos because it saved many crops from complete devastation and saved farmers from endless debt and depression (of money).
The most recent Dietary Guidelines for Americans<span>, released in January 2011, recommend that </span>all adults eat at least half their grains as whole grains<span> – that’s at least 3 to 5 servings of whole grains. Even children need 2 to 3 servings or more. Recommendations in Canada’s Food Guide are almost exactly the same. (Not surprising, since the human body changes little from country to country!)
Hope this help </span>
It's due to the increased production of Melanin that helps block UV light
Because it is not too straight forward and rude and not to passive and easy to walk over it is healthy way to communicate
