Answer:
Non-bird dinosaurs lived between about 245 and 66 million years ago, in a time known as the Mesozoic Era.
hope this helps <3
Answer:
The seismic waves are bent, sped up, or slowed down, or even reflected when they pass through the earth's layers. ... Bending of the waves occurs at the layer's boundaries. 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:
i looked that up so dont give me credit. also seismic waves are basically the waves that are produced from earthquakes. and not like waves in an ocean itskinda like gravity waves in a way
