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...
National Institute of Open Schooling
Water Pollution
Fifteen million children under the age of five die each year due to diseases in their drinking water. Water pollution is the topic of lesson 34 in the series of 36. Scholars, through reading and discussing, study numerous aspects of...
National Institute of Open Schooling
Environmental Concerns
Every year, more than 14 billion pounds of garbage is dumped into the oceans of the world, most of which is plastic and toxic to ocean life. Lesson 32 in the series of 36 focuses on environmental concerns, specifically pollution. Under...
CK-12 Foundation
Ck 12: Biology: Human Population Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on the growth of the human population.
CK-12 Foundation
Ck 12: Biology: Population Study Guide
Learn about the components of a wildlife population, and see the effects of growth.
CK-12 Foundation
Ck 12: Earth Science: Biological Communities Study Guide
Review the relationship between populations and ecosystems.
Ohio State University
General Plant Biology: Plant Evolution
This is a solid review of basic principles of population genetics with an emphasis on plants. Use this to complement your units on evolution and plant biology. Take the quiz to check your understanding.
University of Arizona
The Biology Project: Genetic Drift: An Explanation
This explanation of genetic drift is straightforward and easy to understand. Illustrations are provided to help visual learners
CK-12 Foundation
Ck 12: Biology: Microevolution Study Guide
A general overview over the evolution of one population or one species over a short period of time.
CK-12 Foundation
Ck 12: Population Growth Patterns
[Free Registration/Login may be required to access all resource tools.] Students will identify the definition of carrying capacity and analyze other types of growth patterns of a population and relate these to the population dynamics of...
BiologyWise
Biology Wise: What Is a Gene Pool and Why Is It Important?
Genetic diversity is only possible with a healthy gene pool in a population. This resource explains the characteristics of a gene pool, why it is important, and factors that cause it to change. The examples provided demonstrate the...
BiologyWise
Biology Wise: Definition and Examples of Stabilizing Selection
Explains what stabilizing selection is and how this type of natural selection actually limits genetic diversity in a population. Presents examples of stabilizing selection in different plants and animals.
BiologyWise
Biology Wise: Genetic Mutations in Humans
Discusses common mutations that occur in the human population and describes the many different types of genetic mutations and their impact.
Estrella Mountain Community College
Online Biology Book: The Modern View of Evolution
Take a closer look into the modern view of evolution. This article includes many pieces of evidence, all which support the theory of evolution.
BiologyWise
Biology Wise: A Detailed List of Human Races
Describes the four broad categories of human races in the world, their geographical origins, and their sub-types. Also discusses the difficulties of tracing all branches of a race throughout human history, which is even more so today...
BiologyWise
Biology Wise: Genetic Drift vs. Gene Flow vs. Natural Selection
Explains what genetic drift, gene flow, and natural selection are, and compares their differences, two at a time.
BiologyWise
Biology Wise: Examples That Explain Geographic Isolation
Discusses how unique species evolve when geographic barriers restrict population interbreeding, such as when organisms are confined to an island. Examples are provided.
BiologyWise
Biology Wise: Temporal Isolation: Definition and Examples
Discusses how unique species evolve when temporal barriers prevent population interbreeding. This happens when two closely related species have different cycles of reproductive maturation and the times when they are fertile do no align....
BiologyWise
Biology Wise: Crossing Over and Why Is It Important in Meiosis?
Explains what meiosis is and what happens during crossing over where genetic material is exchanged between chromosomes. This process is important for ensuring that there is lots of genetic variation in a population as it improves survival.
Curated OER
National Park Service: Carlsbad Caverns Natural Resources: The Bat Colony
Part of the National Park Service website, this page provides general info. about the resident bat population, and links to more specific bat info. For the bat enthusiast!
BiologyWise
Biology Wise: Charles Darwin: Introduction to the Theory of Evolution
The main concepts in Charles Darwin's theory of evolution are described, how natural selection works, and the ongoing criticism of evolution from Creationists.
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.
Cornell Lab of Ornithology
Cornell Lab of Ornithology: Nest Watch: Nest Monitoring Manual [Pdf]
NestWatch is a citizen science project where the average person can assist scientists in observing and cataloguing bird populations to track how successful they are at nesting and reproducing. This 36-page package provides information...
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.
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