I don't have your lab observations, but I can give you the reason why refraction occurs.
Refraction refers to the bending of light at the interface as it passes through mediums of different densities.
Refraction occurs because light travels at different speeds in mediums with different densities.
Hope this helps!
Chloroplasts use this energy<span> to create sugar molecules that </span>help<span> the </span>plants<span> grow and reproduce. ... </span>Plants<span> use the carbon dioxide and water, and the cycle begins again. In order to </span>obtain energy<span>, </span>animals<span> do not always have to eat </span>plants<span>. They can also get </span>energy<span> from eating </span>other animals<span> that eat </span>plants<span>.</span>
A would have it.
A is hetrozygous person. Since it is dominant, you only need 1 "H" to recieve the gene. Since B has two "h", it would not contain the disease.