The answer is option a hope it helps
The greater the force that produces a wave, the greater the amplitude of the wave and the greater the energy carried by the wave. In a transverse wave the higher the wave, the higher the amplitude. Sounds with greater amplitude will be louder; light with greater amplitude will be brighter
Speciation: <span>the formation of new and distinct species in the course of evolution
Speciation has occurred when the two species can no longer procreate with each other.</span>
I believe the answer is that the carrying capacity has been reached.
The carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain, given the food, habitat, and other necessities for survival in the environment.