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 common warning symptoms of a heart attack for both men and women are:
Chest pain or discomfort.
Upper body discomfort
Shortness of breath.
A) Normal Growth.
you can always tell by growth
I think B hope this is right sorry if it’s wrong
