What types of organisms typically make up the base, middle, and top of a food web?explain your reasoning

the first level is of producers... Above the producers are the primary consumers ... then the Primary consumers and the Secondary consumers ... Above all are the tertiary consumers that are at the top of the food chain...

Explanation:

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

i think that it is c, d, and e, hope this