
Help your students build real understanding of modeling matter and energy flow through ninety questions that move from basic recognition to genuine reasoning about living systems.
Among the ninety questions, students will see prompts such as "How do human activities impact the nitrogen cycle?", "What is a primary factor that limits the number of trophic levels in an ecosystem?", and "How does energy flow in a trophic pyramid?"
Because the three worksheets share the same content in three different formats, you can spread them across the week: one for diagnosis, one for practice, and one for assessment, without repeating a single question.
This set is part of a complete NGSS aligned biology unit. The unit also covers Photosynthesis and Energy Input, Cellular Respiration in Consumers, Food Chains and Food Webs, Energy Transfer Efficiency, Carbon Cycle, and Nitrogen Cycle, all in the same three worksheet format, so your classroom routine stays familiar while the topic changes.
Suitable for Grade 9-12 biology classes, and for NGSS aligned review at any point in the school year. This set is aligned to NGSS standard HS-LS2-3.



