(20 points)which sentence below does not describe a structural adaptation

a.) an elephant has a long trunk that is used to reach leaves in a high tree

b.) a dog walks to a stream and drinks when it gets thirsty

c.) a hummingbird has a long thin beak to sip nectar from flowers

d.) a rose bush has thorns to protect itself from animals that might eat it

All organisms contribute some water to the water cycle by conducting

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.

Can someone give me the answers to this?