Where does the energy go after it reaches the top predators?

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Anurse is preparing to administer ampicillin 500 mg in 50 ml of dextrose 5% in water (d5w) to infuse over 15 min. the drop factor of the manual iv tubing is 10 gtt/ml. the nurse should set the manual iv infusion to deliver how many gtt/min? (round the answer to the nearest whole number. use a leading zero if it applies. do not use a trailing zero.)

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?