Answer:
Charles Darwin came up with the theory of evolution.
B) One swims freely and the other often lives attached to a hard surface.
E=hv is an equation important when dealing with light. E refers to the energy of a photon; h is Planck's constant and v is the wavelength. According to this equation, light particles called photons travels in packets of energy. This is important in pv cells because this is the technology used to harness solar energy which is converted to electricity. The amount of energy should be estimated to know the appropriate material of construction of the pv cell to achieve optimum conditions. In this way, the pv cell could maximize the sun's energy.
Sound intensity is the intensity/volume of sound. Frequency is how high or low the sound is.
