How can mammals generate heat?
layers of fat Ice cubes wishing Depleting energy stores death with their fur raising their temperature by keeping them warm
A B C D E F G H
Shivering costs the bird, however, by depleting energy stores.
mammals can generate heat by depleting energy stores
How can mammals generate heat? (A) layers of fat (B) Ice cubes (C) wishing (D) Depleting energy stores (E) death (F) with their fur (G) raising their temperature (H) by keeping them warm