1. Lung capacity is basically how much air (in volumes) your lungs can hold.
2. I think that a swimmer would be able to have the biggest lung capacity because when swimming, you are mostly underwater with no air, so being able to hold as much air in as you can when you come up to take a breathe will help improve how well you do.
Visible light is a form of electromagnetic radiation as in radio waves, infrared radiation, ultraviolet radiation, X-rays and microwaves. Generally, visible light is defined as the wavelengths that are visible to most human eyes.
EXAMPLES:
For example, the sun produces visible light.
Incandescent light bulbs, fluorescent, and neon lights are other examples of visible light that we may see on a regular basis.
Visible light is probably the most important of all electromagnetic waves for most of us.
The theory of Continental Dift
Euglenoids are freshwater protists that are both photosynthetic and heterotrophic
c because the elasticity of arteries allow them to expand and contain more blood in them.
Hope this helps :)