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).
<span>Hodgkins
</span><span>- Cancer that affects the lymphatic system, one of the immune system components. Characterized by abnormal development and transformation of immune cells called type B lymphocytes These cells grow, proliferate and accumulate in the lymph nodes.
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<span>What is parkinson's disease:
</span>
<span>Parkinson's disease is a degenerative disease that results from slow and gradual death of brain neurons<span>.</span></span>
