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.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation: