A grassland in central Kansas receives a lower amount of rain than usual, causing the population of producers to become unstable. What event might occur next? Question 4 options:

the number of primary consumers would decrease

the energy in the food web would change directions

decomposers would become the primary energy source

the energy flow in the ecosystem would be dependent on the secondary consumers

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.