they use the waves that are formed to see and learn about the different layers there are in Earth's crust
The answer is c. heliotropism. Hope this helps.
Virus infection domain cell
Answer:
Hope the above picture might help you :)
Answer:
The first person to observe cells was Robert Hooke. Hooke was an English scientist. He used a compound microscope to look at thin slices of cork.
Explanation:
Sorry if I am wrong let me know if I am.