The substance must be able to alter its physical characteristic (for example, its color) in accordance to a change in pH. One example of this is litmus paper, which becomes red under acidic conditions and blue under basic conditions.
deoxyribose sugar in DNA and ribose sugar in RNA.
DNA contains THYMINE but RNA contains URACIL in place ot that and all other nitrogen bases are same.
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Answer:
A polyp is a small clump of cells that form in the colon. Most of the time they are harmless but they could develop to be colon cancer which is the reason the polyp needed to be removed.
Explanation:
Answer: Weathering constantly changes the earth's surface by wearing away exposed surfaces, smoothing rough areas of rocks and causing rock materials to break down in time. Weathering creates soil and happens due to ice, wind, water, salt, acids and changes in temperature Gravity shapes the Earth's surface by moving weathered material from a higher place to a lower one.
These are all true except <span>"D. Natural selection usually causes a species to change suddenly," which is false. Natural selection and the subsequent changes to a species takes many thousands of years to have observable results. </span>
