Refer to the 2th Law of Newton
F = m. a
F = 15 x 2.8 = 42 N
Wood because it is natural and we use it for furniture but we also burn it for energy.
Some animals that live in the tundra are caribou, polar bears, and voles. This is a cold environment so they feel comfortable. Their fur keeps them warm so they have no problem with adapting to their surroundings.
