Ecosystems Unit Test with Answers

5-LS1-1

“Support an argument that plants get the materials they need for growth chiefly from air and water.”

Questions 1 to 3, where the tree gains 75 kg but the soil loses 0.1 kg.

5-PS3-1

“Use models to describe that energy in animals' food (used for body repair, growth, motion, and to maintain body warmth) was once energy from the sun.”

Question 5 lists warmth, repair and movement, and question 6 traces the hawk's energy back to the sun.

5-LS2-1

“Develop a model to describe the movement of matter among plants, animals, decomposers, and the environment.”

The food web in questions 7 to 10, plus the terrarium and decomposer questions 11 and 12.