Answer:
Scientists use waves to study the different layers of the earth. Usually, they use seismic waves, which are waves generated by earthquakes or nuclear-test explosions. So, scientists study the path and speed of these waves through the earth to decipher boundaries and the materials that make up the layers.
Explanation:
Answer:
Explanation:"[Earthquakes] don't trigger eruptions. They don't trigger volcanic activity. “But they can trigger changes in geyser behavior. ... According to the United States Geological Survey (USGS), the chances of a Yellowstone eruption is around one-in-730,000.
Answer: not eating enough food, because cells need molecules from both food and air to work
Explanation: the air and food are creating energy for the organism
Answer:
I can't understand what are you talking about. translate it pls.
