I confused what is the question?
Answer:
A. 5-CAATTC-3'
Explanation:
Due to the spontaneous mutation of the cytosine, becoming uracil, the change in the new complementary strand would occur as follows:
5'-GAATCG-3 '-> Cytosine deamination = 5'-GAATUG-3' -> the new replicated complement is = 5-CAATTC-3 '
Remembering that Uracil equals a thymine in DNA, for that reason the mutated uracil base becomes Adenine when its synthesized in the new strand
A metal and a non-metal form an ionic bond.
The statement which best explains why adequate wastewater treatment is necessary for urban areas is; "Wastewater cannot be purified by nature.".
Urban areas refer to those areas that have a dense population of people and also have quite a number of industries that generate several tons of waste. Disposal of these wastes is often an important environmental concern.
Many of the wastewater produced in urban areas contain chemical substances such as cleaning agents, persistent organic pollutants, heavy metals etc. Nature can not remove these waste materials. They can only be removed by appropriate wastewater treatment.
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Answer:
The finches on Galapagos Islands had different beak
The beaks of the finches changed over time
The Galapagos finches had a common ancestor
Explanation: Darwin's Finches are a good example of natural selection and adaptive radiation of evolution. The different finches in Galapagos Island have emerged from a common black, seed eating, short beak finches. This is called adaptive radiation, where different species arose from a single ancestor.
Due to changes in the natural environment, food resources, some finches have a long beak. This long beaks help them to eat insects. As a result, the competition will be less and nature selects them to survive in the new environment. This is a natural selection of evolution.