Which instrument measures liquid precipitation? Group of answer choices

Rain gauge

Wind vane

Anemometer

Barometer

Competition occurs between species when

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 of these is not a nucleotide base found in dna?