Answer:
The esophagus.
Explanation:
Which is a long tube that connects the mouth to the stomach
<span>Sensory and motor nerves make up the central nervous system.</span>
There are different trophic levels at each stage. Trophic levels determine the amount of energy at each stage of the food chain. For example, the energy is 100% at the producer (plant), so it's the 1st trophic level, and so on. Energy amounts decrease as you go up a food chain, and you rarely find more than 5 animals in one because there is not enough energy left for the 6th consumer
Viruses have both rna and dna
