All organisms begin life as a cell.

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

I’m stuck on this question cuz i’m stupid sksksksk

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?