When two or more waves meet, they interact with each other. The interaction of waves with other waves is called wave interference. Wave interference may occur when two waves that are traveling in opposite directions meet. The two waves pass through each other, and this affects their amplitude.
Answer:
let m be the mass of the object, K be the force constant and Fs be the force by the spring on the mass.
Natrual selection is where animalz better adapt to their enviroment