I'd say A: tidal waves. B, C, and D don't really seem to fit for me.
B) One swims freely and the other often lives attached to a hard surface.
Answer:
D
Explanation:
plants make their own food not animals, hope this helped :)
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: