In this revised edition, students learn that in order to live, animals inhale oxygen and exhale carbon dioxide. Many small animals breathe directly through their body coverings. Most large water-dwelling animals breathe with gills. Adult insects breathe through tubes in the sides of their bodies. All large land-dwelling animals including humans breathe with lungs. A Norman Bean film. (Revised Edition)
Grade Levels: 4 to 12
12 minutes, color.
Direct link to purchase the DVD:
http://www.phoenixlearninggroup.com/Products/VideoDetail.aspx?id=bbc1ec4e-076...
dolphin was disgusting. like a 2nd mouth on the top of the head.
sarahkohkl 5 months ago
Dude. I can NOT hear!!!
theredhead1415 1 year ago
This is NOT a porpoise, guys. This is a dolphin. The animals are very different. Porpoises have a flat rostrum, spade shaped teethm, a triangular dorsal fin, fused cervical vertebrae and are smaller than most dolphins. come on..let's get our facts straight here.
carolcollom 1 year ago
we also produce CO2 lol....
damselcrousez 1 year ago
nerd
iiKr4zY 2 years ago
They produce Co2 dude! they have to be stopped!
JoarMusic 2 years ago
@JoarMusic your retarded
iiKr4zY 2 years ago
This is why we need to kill all animals because they contribute to global warming. the sooner the better! we have to save ourselves!
JoarMusic 2 years ago