7 points The respiratory system is made up of the airways, lungs, and respiratory
muscles. The lungs are classified as -
a cell.
an organism.
an organ.
an organ system.

In 2002, the rare earth elements mine in mountain pass, california was closed because

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

Calculate the concentration of all species in a 0.165 m solution of h2co3.