Why is nitrogen important

Is it considered muscle s ennervation if sympathetic fibers innervate the vessels within the muscle?

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d