It's About Time
Factors Affecting Population Size
How do we predict future population growth? Young researchers investigate various factors affecting the size of our population. As they calculate and interpret graphs to determine factors that could potentially affect increases...
Kentucky School for the Deaf
Levels of Organization within an Ecosystem
From tiny organisms to entire biomes, young scientists examine the interdependent relationships tying all living and non-living things together with this collection of ecology resources.
Science Struck
Science Struck: Limiting Factors in the Desert Ecosystem
Describes conditions in a desert that limit how large populations of species can grow.
Bio Topics
Bio Topics: Measuring Population Sizes
Read and understand the concept of ecological population counts and sizes. Hover the mouse over questions to reveal the answers as you sharpen your skills.
CK-12 Foundation
Ck 12: Earth Science: Agriculture and Human Population Growth Study Guide
[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about the evolution of agriculture and how it has impacted human population growth. Includes a few questions to check for understanding.
Science Struck
Science Struck: The 6 Chief Levels of Organization in Ecology
Describes six levels of organization in the biological world - individual species, population, community, ecosystem, biome, and biosphere.
CK-12 Foundation
Ck 12: Earth Science: Biological Communities Study Guide
Review the relationship between populations and ecosystems.
McGill University
Mc Gill University: Canadian Biodiversity: Ecozones: Mixedwood Plains
This Mixedwood Plains ecozone extends along the Quebec City- Windsor corridor and the densely-populated region of Southern Ontario. This brief, concise description includes a collection of images of the animals and birds native to the...
Khan Academy
Khan Academy: What Is Ecology?
A webpage giving an overview of ecology. Learn about the biotic and abiotic factors that make up an ecosystem as well as the different levels of ecology.
Other
The Sustainable Scale Project: Carrying Capacity
Students study carrying capacity, a measure of sustainability within changing conditions inside ecosystems.
PBS
Nh Pbs: Nature Works: Estuaries
Learn more about estuaries when you visit this informative site. This resource provides locations of and weblinks to estuaries in the United States.
Other
Virginia Places: What Determines the Boundaries of a Region in Virginia?
Although this site talks about regions in Virginia, it offers excellent information on regions in general, for example, ways regions might be classified; e.g., by population density, geology, watershed, ecosystem, economy,...