Scientists have collected significant evidence that shows the overall temperatures of the planet have been increasing steadily for many years. What questions could they ask to clarify this evidence? Select all that apply.

When did the change in climate start becoming dangerous to life on Earth?

How does the amount of ozone in the atmosphere today compare with the amounts 50 years ago?

How have the amounts of greenhouse gases changed over time?

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.