Light emitted by the sun reaches the earth in Light emitted by the sun reaches the earth in a) 1 second b) 10 seconds c) 13 seconds d) None of these Share this Share on FacebookTweet on TwitterPlus on Google+ Learn More Multiple Choice Question :After birth, red blood cells are normally made only in the:Monocytes are blood cells that mature (differentiate) into:Which electrolyte is necessary for normal platelet function?During an infection, lymph nodes enlarge and become tender because: _____ is an unstable type of hemoglobin that cannot bind with oxygen. The most abundant cells in the blood are: