How Ecosystems Change Over Time Bell Ringers & Exit Tickets | Environmental Science | Grades 9–12

How Ecosystems Change Over Time Bell Ringers & Exit Tickets is bell ringer and exit ticket prompts for high school Environmental Science (grades 9–12) on How Ecosystems Change Over Time.

Pairs with: How Ecosystems Change Over Time Slide Show Presentation; How Ecosystems Change Over Time Guided Notes; How Ecosystems Change Over Time Lesson Quiz; How Ecosystems Change Over Time Vocabulary Words & Definitions.

Sample item: “2. Succession driven from inside, by the organisms themselves, is called ______; succession driven by external forces is called ______.”

What's inside: Bell Ringers & Exit Tickets (editable .docx + PDF, about 1,889 words, 9 pages); answer key / model answers for the teacher.

Standards: HS-LS2-6 — Evaluate claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem. HS-LS2-7 — Design, evaluate, and refine a solution for reducing the impacts of human activities on the environment and biodiversity.

Resource type: Bell Ringers & Exit Tickets. Format: editable Microsoft Word file plus a ready-to-print PDF.

Classroom use: Open class with a bell ringer and close with an exit ticket to check understanding. Built for high school Environmental Science, grades 9–12.

Format note: These files are delivered in Microsoft Office formats (Word and/or PowerPoint). If you open a worksheet that includes tables in Apple Pages or another non-Microsoft app, table formatting may not display correctly. For best results, use Microsoft Word or PowerPoint (or upload the file to Google Docs). If you run into any formatting issues, contact us and we can send a PDF version.