Read the observation, question, and hypothesis. Then, choose the dependent variable from the list.
- Observation: Most hummingbird feeders are red.
- Question: Are hummingbirds attracted to the color red?
- Hypothesis: Hummingbirds are more attracted to red feeders than nonred feeders.
The dependent variable in this case is
the color red
hummingbird feeders
hummingbird behavior
bird watching

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