Answer:
D.) Matter.... would be your answer
Answer:
Proxima Centauri is 4.243 light years away
Explanation:
The antibodies to the HIV virus may take up to three months to appear in the blood of the infected person.
Therefore, the second blood test is necessary three months after a person thinks that he/she has been exposed to HIV to check the presence of these antibodies and confirm whether the person is infected or not.
Uniformitarianism(1785)
Relative dating(around the 1800’s)
Absolute dating also known as radiometric dating (1905)
Neptunium (1940)