5 results for “air”

1. Animals

   Birds

   air sacs that keeps fresh air flowing through the lungs on both the in-breath and the out-breath

   Article · 3 min read

   

2. Animals

   Insects

   Air enters through small holes along the sides of the body and travels through tubes directly

   Article · 3 min read

   

3. Animals

   Whales and Dolphins

   air, through blowholes on the top of the head, and must surface to do so; a whale

   Article · 4 min read

   

4. Animals

   Reptiles and Amphibians

   creatures ever to breathe air on land, still doing it their way, 370 million years on.

   Article · 3 min read

   

5. Animals

   Mammals

   air with lungs. These traits define the mammals, a group of about 6,500 species that

   Article · 4 min read