It led to an understanding of how cancer cells divide so rapidly
The law of motion which is being described in this scenario is NEWTON THIRD LAW OF MOTION.
Newton third law of motion states that to every action there is an opposite and equal reaction.
Answer
Homologous structures that, because of their similarity, suggest a connection with a common ancestor.
Soils develop different horizons due to the amount of weather that is being exposed to each individual layer. What separates one horizon from another is the properties that make up each layer.
