I think the answer you are looking for is that the stomach is the fourth level of organization.
You want about 500 calories a day extra.
Answer: no body cavity—acoelomates; body cavity not completely lined with mesoderm—pseudocoelomates; body cavity completely lined with mesoderm—coelomates
Answer:yes
Explanation:yes because that is what your teacher is looking for
Answer:
1. Sewage
2. diarrhea
3. atmosphere
4. 100 gallons of water
5. agricultural pollution
6. water cycle
7. water
Explanation:
