How do you think the density of titanium-containing minerals would compare to the density of minerals used to make steel? Explain.

One of the methods used to reduce energy use is: a. energy efficiency c. energy conservation b. energy reservation d. energy holding select the best answer from the choices provided a b c d i know the answer is not option a

Which muscle is responsible for inhalation ?

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