HELPPP A researcher plans to study the effect of temperature on the rate of metamorphosis from tadpole to frog. The researcher sets up two tanks with one tadpole in each. Both tanks are filled with water from a nearby pond. One tank is kept at 15°C and the other at 25°C. How should this experiment be improved? A: use tap water in one tank and pond water in the other
B: keep both tadpoles I. The same tank and vary its temperature
C: use tadpoles of 2 different species
D: have may tadpoles in each tank

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.