To ensure that you get the right concentration of sanitizing solution:

a. do your best to estimate it correctly
b. follow the label instructions and use a test strip
c. immerse items for at least 30 seconds
d. consistently use 100 ppm for any sanitizing solution

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

How water is moving through the ecosystem ?