Which term describes the amount of water vapor in the air? air pressure humidity transpiration density

The receptor cells that convert light energy into neural signals are called

Which statements identify what astronomers currently know and think will happen with our universe? check all that apply. the big bang produced dark energy, which accounts for some of the energy needed to expand the universe. the vastness of space may contain a type of matter known as "dark matter." the universe is currently shrinking at a rapid rate. the universe is currently expanding at an accelerating rate. the big bang theory explains all the energy and matter discovered by scientists.

Which wave would cause destructive interference at every point of the wavelength and completely cancel out the wave?