---
title: "SEC3: Community Interactions Overview (Georgia Science standard)"
code: SEC3
cite_as: Georgia Standards of Excellence, Science, SEC3
subject: science
grades:
  - high-school
language: en
canonical_url: https://georgiahomeroom.org/standards/code/SEC3
md_url: https://georgiahomeroom.org/standards/code/SEC3.md
alternate_language_url: https://georgiahomeroom.org/es/standards/code/SEC3.md
source_url: https://case.georgiastandards.org/ims/case/v1p1/CFDocuments/27a08dc6-416e-11e7-ba71-02bd89fdd987
source_last_changed: 2025-05-29
data_built: 2026-09-18
publisher: Georgia Homeroom, a free public-interest project of Georgia Civic Data. Not affiliated with or endorsed by the Georgia Department of Education or any school district.
up: https://georgiahomeroom.org/standards/science/high-school.md
index: https://georgiahomeroom.org/standards/index.md
---

# SEC3: Community Interactions Overview

Obtain, evaluate, and communicate information to construct explanations of community interactions.

- Subject: Science
- Appears in: High School, https://georgiahomeroom.org/standards/science/high-school.md

## Expectations

- **SEC3.a**: Construct an argument based on evidence to support how species interactions (e.g., predation, parasitism, mutualism, commensalism, and competition) and adaptations are a response to selective pressures.)
- **SEC3.b**: Obtain, evaluate, and communicate information about various ecological niches within habitats and determine how interactions between species lead to resource partitioning.
- **SEC3.c**: Construct an explanation based on evidence that describes the impact of keystone, invasive, native, indicator, and rare species in Georgia ecosystems.
- **SEC3.d**: Construct an explanation about species diversity and how it relates to the stability of ecosystems and communities.
- **SEC3.e**: Develop a model to explain ecological succession in terms of changes in communities over time and the impact of disturbance on community composition.

## Georgia Milestones coverage

No Georgia Milestones blueprint cites this standard.

Source: Georgia Standards of Excellence, published by the Georgia Department of Education at case.georgiastandards.org.