From the producer level to which level does energy flow directly

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Which of these is not a function of some membrane proteins ? a.allowing polar molecules to enter the cell b.recognizing other types of cells c.receiving messeges from other cells b.carrying messages to oher cells

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field