Small frogs living in a marshy region feed on small insects in the region. The relationship between the frogs and insects is a relationship. A particular species of lizards is introduced into the marshy land. These lizards also start feeding on these insects. The introduction of lizards may lead to

Small frogs living in a marshy region feed on small insects in the region. The relationship between the frogs and insects is a prey-predator relationship. A particular species of lizards is introduced into the marshy land. These lizards also start feeding on these insects. The introduction of lizards may lead to no population change in any of the three species.

Explanation:

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .