Both of them produce mucus.
Answer:
There are many ways scientists can gather evidence to learn about Earth's interior including direct evidence from rock samples and indirect evidence from seismic waves.
also
1. Seismic waves and earthquakes
2. Volcanoes
3. Principles of density
4. Earth is magnetic
Explanation:
Answer:B)food
everything else is transported from those options except food. Hopefully this is right.
Answer:
they need to be able to maintain their salt content, thru osmoregulation
Answer:D
Explanation: Thats just how that works man