The process of fermentation happens A whenever a plant receives direct sunlight. B when there is too much glucose for aerobic respiration. C whenever the muscles need more acid. D when there isn’t enough oxygen for aerobic respiration. please help fast on test now

What kind of action is a cause of air pollution

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures