Educational worksheet on characteristics of life and classification of biotic and abiotic factors in ecosystems.

A worksheet titled "Characteristics of Life Worksheet" with a table listing items like bread, yeast, apple seed, and virus, and columns for cell organization, reproduction, growth and development, response to the environment, obtaining and using energy, and determining if the item is living or non-living. Below is a diagram illustrating biotic and abiotic factors in an ecosystem, with examples like sun, wind, trees, deer, and rocks.