This hard worksheet introduces second graders to food chains and the jobs animals do in nature. Multiple-choice questions show that food chains start with plants or the sun, name a hawk as a predator when it eats a mouse, and use grass as an example of a producer. One question even asks what happens to foxes if all the rabbits in a meadow disappeared.

Fill-in-the-blank sentences lock in big words like predator, prey, producers, energy, and consumer, helping children see how energy moves from one living thing to the next. These ideas open the door to deeper third-grade ecology lessons.