Chewing bread, tearing paper, breaking rocks
Answer:
have an open circlitory system
Explanation:
No they like to kill theyre own food and are very protect of therye food
The first step in acquiring scientific knowledge is often:
Observation
Answer:
Seismic waves traveled at varying speeds.
Explanation:
The Moho Discontinuity was discovered by one Croatian seismologist, Andrija Mohorovicic. He realized that the speed of a seismic wave depends on the density of the material the wave is moving through. Mohorovicic interpreted the acceleration of seismic waves observed within the Earth's crust as a change in composition of matter within the Earth.