Which is the function of this structure?
to bring air into the body
to exchange oxygen with carbon dioxide
O to carry air to the lungs
O to release oxygen from the body

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

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

Producing disposable grocery bags consumes resources. recycling disposable bags is a solution that can recover some of the resources used to make new bags. which of the following behaviors could further refine the solution? a. disposing of bags by burning them b. reusing bags whenever possible c. using bags at once so that they do not break d. using only nonrenewable materials to make new bags subject is environmental science for apex users