Fuel cells are a promising technology for use as a source of heat and electricity for buildings, and as an electrical power source for electric motors propelling vehicles. Fuel cells operate best on pure hydrogen. But fuels like natural gas, methanol, or even gasoline can be reformed to produce the hydrogen required for fuel cells. Some fuel cells even can be fueled directly with methanol, without using a reformer.
Answer 2: Chlorophyll is a green pigment that gives most plants their color.The reason that it is green is because it absorbs other colors of light such as red and blue, so in a way the green light is reflected out since the pigment does not absorb it.and plants (and plants in the ocean, called algae) have a lot of chlorophyll-a pigment because it is essential to photosynthesis, but they also have other pigments, called accessory pigments, that help them absorb light.
All plants have chlorophyll, which is a green pigment in leaves and stems. Chlorophyll is a light-absorbing pigment, and it actually gets its green color because it absorbs blue and red wavelengths of light.The green wavelengths are reflected, giving that unmistakable color to plants.Since it is a light-absorbing pigment, chlorophyll is called a photoreceptor.hen light energy is passed by chlorophyll molecules to the center of photosystem II (the first photosystem in the chain), it energizes a central chlorophyll molecule called P680. This molecule is so energized that it is passed along another chain to photosystem I.