1. PPM means parts per million.
2. Chemical cause: Mercury contamination in the food chain.
3. a) pollution, b) bioaccumulation, c) extinction, d) habitat change
4. a) based on claims made in the passage, biological magnification is a result of: pollution
5. a) type of toxin, b) size of bird, c) type of bird, d) amount of food consumed
6. The author’s purpose is to explain the process of biological magnification.
7. Plants are producers.
8. Animals that eat plants are primary consumers.
9. Toxins accumulate more in organisms higher up the food chain because they consume many organisms that already contain toxins.
10. The term “limited” means restricted or confined.
Parent Tip: Review the logic above to help your child master the concept of biological magnification worksheet.
