External respiration takes place in the ... ?

A) Bronchi

B) Trachea

C) Alveoli

D) Diaphragm

Which statement explains how wind shear is created? Warm air meets hot air from the tropics. Two large storm systems collide over the ocean. Warm, moist air clashes with polar air. Polar air collides with a landmass

The streams and small rivers that feed into a main river are called

A box with a total surface area of 1.88 m^2 and a wall thickness of 2.44 cm is made of an insulating material. A 14.1 W electric heater inside the box maintains the inside temperature at 18.6 ◦C above the outside temperature.

Do you think that solids can undergo convection

Polluted water can contribute to

If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have A. a frequency higher than the original frequency. B. a pitch lower than the original pitch. C. a period higher than the original period. D.

Waves on a pond are an example of which kind of wave? a. sound b. surface c. deep water d. non-mechanical

A freight train traveling with a velocity of - 4. o m/s begins backing into a train yard. if the train's average acceleration is - 0.27 m/s^2 what is the trains velocity after 17s

A current of 19.5 mA is maintained in a single circular loop with a circumference of 2.30 m. A magnetic field of 0.710 T is directed parallel to the plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop?

A zero on the kelvin temperature scale is called "absolute zero." a. true b. false