Benchmark 5D
The Living Environment: Interdependence of Life
Grades K-2, page 116

Animals eat plants or other animals for food and may also use plants (or even other animals) for shelter and nesting.

NSES Content Standard C
Life Science: Organisms and their environments
Grades K-4, page 129
All animals depend on plants. Some animals eat plants for food. Other animals eat animals that eat the plants.