A student wanted to study the amount of mold growing on pizza at different temperatures. In the experiment, the student set up four identical p and light conditions are shown in the data table below. Data Table Variables Pan 1 Pan 2 Pan 3 Pan 4 Temperature -10°C 0°C 15°C 30°C Light conditions kept in darkness kept in bright light kept in darkness kept in bright light What was one error made with the four pans of pizza when setting up this experiment? The pizzas were different sizes. The pizzas had different ingredients. The pizzas were at different temperatures. The pizzas received different amounts of light.

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.