In order to be valid, a particular test has to be reliable (or reproducible), sensitive, and specific. true false

The given statement is true.  

Whenever a test is used as a component of the data gathering procedure, the reliability and validity of that test are crucial. Validity refers to the extent to which the test is truly identifying what one intends to determine.  

On the other hand, reliability is tantamount to the consistency of a test, observation, or survey. A reliability coefficient is usually the statistic of choice in finding the reliability of a test.  

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

b. lithosphere, asthenosphere, mesosphere   is the answer most likely