Astudent conducted an experiment to test whether talking to plants would them to grow faster. the student talked to one group of plants and hand watered them. the student did not talk to the other group of plants and used sprinklers. after three weeks, the plants that were spoken to showed much more growth than the plants that were not. based on the results of this experiment, which is the best conclusion?
talking to plants may or may not plants grow faster because three weeks is not enough time to tell.
talking to plants may or may not plants grow faster because the amount of water given was likely different for each group.
talking to plants does not plants grow faster because the experiment did not involve enough groups of plants to determine this.
talking to plants does plants grow faster because those plants showed more growth.

Talking to plants may or may not help plants grow faster because the amount of water given was likely different for each group.

Explanation:

In the given situation, the growth of the plant is the dependent variable, which is affected by the talking and water which are the independent variables. The talking cannot be considered as the reliable variable for allowing the plant to grow but water is the basic necessity.

Not each group was given equal amounts of water thus talking to plants may or may not help in growth.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."