The length of a year is equivalent to the time it takes for one
A: revolution of Earth around the Sun

The relationship between an owl and a mouse is a
A: predator-prey relationship.

What characteristic helps a rabbit survive in a winter environment?
A: camouflage

Endothermic reactions are reactions that require more energy to start than they give off in the products. Which statement describes an endothermic reaction?
A:
It absorbs heat energy and is cold to the touch.