Which stimuli is detected by a chemoreceptor?

Explanation:

The chemoreceptor is a type of sensory receptor that detects and changes chemical material into biological signals.  Generally, this receptor detects toxic chemicals in internal as well as from the external environment and sends the information to CNS. Generally, chemoreceptors are classified into two groups one is called distance chemoreceptors such as olfactory receptor neurons and the other is called direct chemoreceptors such as the taste receptor of the gustatory system.  

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above