For my first idea I meant it like for vegetables and plants not animals.... lol
Great idea!
I've got a few others. You could measure the amount of sugar in soda, measure the amount of oxygen in the air. Antacid Potency or Oersteds experiment.
You could test how microwave radiation affects different organisms
byeeeee
and me :D
Can we do 50 crowbars? (or 100 if you can) for 50 ill give 300k plus a katana