Which is NOT a method of detecting viruses? enzyme immunoassay

hemagglutination assay

nucleic acid amplification test

morphology analysis

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above