Answer:
D. Adenine and Thymine form hydrogen bonds, while cytosine and guanine form covalent bonds.
Explanation:
I majored in Biology
Answer:
IgM, IgA, IgE, IgD and IgG
Explanation:
IgM functions in the initial response to offence.
IgA is important for protection of mucus membranes such as in saliva, sweat, tears and gastric fluid.
IgE is active during allergic reactions and defense against infections.
IgD is found on the surface of lymphocytes and is activated upon contact with antigens.
IgG forms part of the secondary response to antigen and is also responsible for newborn protection.
Answer:
72F and 200ft
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A place where 2 geologic units meet is called contact .
Sea level rises when it rains or when snow is melting. Sometimes more water forms in new areas and makes it into an add on to the ocean which Changes the shape.