Which level has the most biomas?
(ecological pyramid)

Which best explains how this maneuver unblock a person's airway?

Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide → hydrazine + water b. nitrogen + water → hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide → nitrogen + water d. water + hydrogen peroxide → nitrogen + hydrazine

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?