What are the 5 subgroups of geologic time scale?

What is turgor pressure, what causes it, and what does it do for a plant?

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes