Answer:
Adenine (A) is one of four chemical bases in DNA, with the other three being cytosine (C), guanine (G), and thymine (T). Within the DNA molecule, adenine bases located on one strand form chemical bonds with thymine bases on the opposite strand.
Thymine - a compound which is one of the four constituent bases of nucleic acids. A pyrimidine derivative, it is paired with adenine in double-stranded DNA.
Answer:
The negative charge of an ion is equal and opposite to charged proton(s) considered positive by convention. The net charge of an ion is non-zero due to its total number of electrons being unequal to its total number of protons.
Explanation:
<span>oil, coal, natural gas</span>
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i believe its river
Explanation:
A watershed is land that contributes water to a stream, river, lake, pond, wetland or other body of water. The boundary that separates one watershed from another, causing falling rain or melting snow or spring water to flow downhill in one direction or the other, is known as a “watershed divide”.
Ground water can only be found within a few miles of the Earth’s surface because water can permeate through the soil, but at one point, the ground becomes too dense for water to seep through.
