A gene found in naturally occurring soil bacterium, Bacillus thuringiensis (Bt), contains a protein that kills certain insects. Scientists have genetically modified certain organisms such as corn, potatoes, and cotton by introducing the Bt gene into their DNA in order for these plants to have this desired trait. Which question were the scientists most likely trying to answer?

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases