Jordan has an organic garden. he is designing an experiment to determine if a mineral-oil bug spray made of garlic and habanero peppers is more effective on japanese beetles than one made with just garlic. how could jordan improve his plan for the experiment as outlined below?
1. prepare bug sprays—being sure to document ingredients in each type.
2. determine which plants will be sprayed and section off two groups.
3. spray every morning at 8: 30 a. m.
4. record number of beetles on each group at the same times every day.
5. record significant rain or weather events that may affect application of the sprays.
6. photograph damage on both groups of plants at the end of the trial.
a. he should account for all the beneficial insects he accidentally kills.
b. he should include a control group which receives no spray.
c. he should prepare several variations on each spray's recipe.
d. he should remove all living beetles after each counting.
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