it is more efficient for the body and it gives them time to collect more
tundra and tropical rain forest
Answer:
1st is correct
Explanation:
At its simplest, a dog's digestive system is a long tunnel that runs from their mouth to the anus. Food goes in at the mouth and travels through this tube and at various stages is broken down and either absorbed into the body or excreted as waste at the anus.
So every organism is individually classified without the worry of mixing up two organisms like a fly and nat.
