Explanation:
D the substance get downeards
Answer:
hydrogen gas dominated earth's first atmosphere?
Answer: A. the lens focuses light on the retina
The lens is composed of transparent, flexible tissue and is located directly behind the iris and the pupil. it is the secondary part of the eye after the cornea. by changing it's shape the lens changes the focal distance of the eye and focuses the light that passes through it and into the retina in order to create clear images of objects. it also works together with the cornea to refract, or bend light.
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The best answer that is being described above is the RODS. Along with cones, Rods are one of the photo<span>receptor cells in the retina of the </span>eye. Unlike the cones that help with color vision, the rods focuses more on the gray scale, the reason why we can see everything in a gray scale at night or in a dark environment. Hope this helps.
1. Two genetically identical copies of DNA
2. Finds an error in DNA, removes the incorrect nucleotide and replaces it with a correct one.
3. It is used as a copy/ "template" for replication in order to have two identical copies of DNA.
4. DNA helicase unwinds DNA double helix and Topiosomerase ensure there isn't too much unwinding.
5. Replication has a built on proofreading system - DNA polymerase removes the incorrect nucleotide and replaces it with a correct one.
