GED® Environmental Science: Ecosystems and Human Impact (Vol. 1)
A comprehensive GED® Environmental Science review covering ecosystems, biomes, food webs, energy flow, nutrient cycles, biodiversity, population dynamics, human impact on the environment, land use, and conservation strategies. Ideal for students who want full coverage of Environmental Science in one structured course.
📚 Course Curriculum
An ecosystem is all the living organisms in an area plus the non-living physical environment, interacting as a system. It has two components:. Biotic factors …
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Feeding relationships move energy through an ecosystem. Every organism fits into a feeding (trophic) level:. Producers (autotrophs) — make their own food using sunlight (photosynthesis) …
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Biodiversity is the variety of life. It has three levels:. Genetic diversity — variation in DNA within a species; allows adaptation to change. Species diversity …
Open trial session →A population grows when births (and immigration) exceed deaths (and emigration). The four factors:. Two patterns of population growth:. Exponential growth (J-curve): occurs when resources …
Open trial session →Human activities have dramatically altered Earth's ecosystems, especially since industrialization. The GED® tests your ability to identify these impacts and their ecological consequences. Habitat destruction …
Open trial session →How humans use land and extract resources has profound ecological consequences. Land use categories and their impacts:. Cropland: 50% of Earth's habitable land is used …
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Conservation biology aims to protect biodiversity and restore damaged ecosystems. The GED® tests knowledge of major strategies and their rationale. Protected areas:. National parks and …
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Course Syllabus
This self-paced GED® Science course follows a 7-lesson sequence. Work through the modules in order so that each skill supports the next.
Course sequence
Module 1 - Lessons 1-4
- Ecosystems and Biomes
- Food Webs, Energy Flow, and the 10% Rule
- Biodiversity and Its Importance
- Population Dynamics and Carrying Capacity
Module 2 - Lessons 5-7
- Human Impact on Ecosystems
- Land Use, Agriculture, and Resource Management
- Conservation Strategies and Environmental Solutions
Practice and completion
- Use worked examples and lesson practice to check understanding after each module.
- Review incorrect answers, explain the correction, and repeat weak skills.
- Complete the available mixed or final course practice to demonstrate readiness.
Course Outcomes
By the end of this course, learners will be able to:
- Explain the key scientific ideas and vocabulary in Ecosystems and Biomes.
- Interpret observations, data, models, or evidence related to Biodiversity and Its Importance.
- Apply scientific reasoning to questions involving Population Dynamics and Carrying Capacity.
- Evaluate explanations and identify common errors about Human Impact on Ecosystems.
- Connect Conservation Strategies and Environmental Solutions with other course concepts in mixed practice.
- Use feedback and answer explanations to diagnose and correct mistakes.
- Complete mixed, exam-style practice with clearer reasoning and greater independence.
📝 Practice Questions
21 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.