Ami got an hiv test, and the results were negative. to make sure the results were accurate, she went back three weeks later for another test. she did not have sexual relations, and there were no life changing events between tests. this time, her test was positive. which statement best explains why ami’s tests showed different results?

It was not long enough since she contracted the virus until it became evident in blood tests.

Explanation:

Under the assumption that the tests were performed correctly, it is possible that the concentration of the virus in Ami's blood was so low that it did not show reactivity in the blood tests. In fact, people who treat HIV with antiretrovirals often get negative test results due to the low concentration of the virus in the blood.

Because the human body is unable to eliminate the virus on its own, its concentration will increase as time passes, it will become evident in blood tests, and eventually it will become an immunodeficiency syndrome.

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explanation:

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."