Grade 7 Science

Grade 7 Science - Unit X Overview

Succession

In the unit on Succession, students will identify the types of events that can establish a new ecosystem and predict the series of changes that occur in that ecosystem over time. Students will examine the possible disturbances that can result in secondary succession and discover the significance of succession in reaching and maintaining a condition of stability.

Critical Questions

What are some possible causes of succession?
How do primary and secondary succession differ?
How does succession help an ecosystem sustain equilibrium?

Suggested Time Frame: 1 week

Student Performance Expectations

Key

Information in the brackets that is not in bold (8.2A) is the Texas Essential Knowledge and Skill (TEKS) that this objective is aligned to.

Information in the brackets that is in bold (8.2.11B) (8.2.12A) (11.2US10A) is the specific Texas Assessment of Knowledge and Skills (TAKS- test) objective this objective is aligned to.

Describe succession and the importance of an ecosystem achieving and maintaining equilibrium. (7.5 A-B; 7.12 D)