the Galapagos
While visiting the Galapagos in 1835, British naturalist Charles Darwin observed local plants and animals.
I think the enzyme photolyase is activated by light and can repair thymine dimers caused by UV radiation. Exposure to UV radiation is the main factor that causes skin cells to become cancer cells. These enzymes are involved in the repair of ultraviolet light-induced DNA damage when activated by light absorption.
Yes, because the envelope can be a important document- so therefore it can be considered "confidential".
I think you are refering to the periodic table. The periodic table is important because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.
Different stars are different colors depending on the temperature. So, for example, a blue star is hotter than a yellow star such as our Sun.
