2. which organisms utilize a one-way air flow through their lungs to maximize air flow efficiency and oxygen consumption? a. amphibians b. fish c. mammals d. birds

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

Tides that occur during the new and full moons