Explain why both the rsid- saliva kit and the phadebus test are considered to be a
presumptive test rather than a confirmatory test?

i'll try what topic lol

i wish i could with all of them i can barley see the first one so here's the answer to the first one b

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question