The tendency of water molecules to attract one another due to polarity is called ionic bonding hydrogen bonding covalent bonding chemical bonding

9. the history of life on earth is recorded in

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

Choose the diagram that best represents a habitat corridor explain your choice.