Can you explain the question better
<span>It's is the second one. The waste materials generated by one organism are often reused by other organisms.Mass, or matter, is conserved in all physical and chemical changes. Matter is not created or destroyed within ecosystems, it only undergoes physical or chemical changes. One example of this process is that the waste materials generated by one organism are often reused by other organisms as food or nutrients.</span>
I Think The answer is b I hope it helps ya
Ocean waves depend on wind for energy. The wind blows on the surface of the water, the energy is transferred from the wind to the waves through vibration of particles. Energy transfers from potential energy to kinetic energy