Chapter 21
Populations and Communities
Lessons
Living Things and the Environment
Study Populations
Interactions Among Living Things
NC Standard
8.L.3.1 Explain how factors such as food, water, shelter, and space affect populations in an ecosystem.
8.L.3.2 Summarize the relationships among producers, consumers, and decomposers including the positive and negative consequences of such interactions including: coexistence and cooperation competition (predator/prey) parasitism mutualism.
Lesson 1, Living things and the environment
Which is an example of an organism?
Which is an example of a habitat?
What are examples of biotic factors?
What are examples of abiotic factors?
What do all living things depend on for food?
What is an example of a species?
What is an example of a population?
What is an example of a community?
What are examples of ecosystems?
What is the smallest level of an organization?
Lesson 2, Studying Populations
What is population density?
What are limiting factors?
What are some factors that cause a population to decrease?
What is carrying capacity?
What would be the outcome in a deer-wolf relationship, if the number of deer increased?
What would be the outcome in a deer-wolf relationship, if the number of deer decreased?
Lesson 3, Interactions among living things
8.L.3.1 Explain how factors such as food, water, shelter, and space affect populations in an ecosystem.
What is natural selection?
What is an adaptation?
What is an example of a niche?
What is a cause for competition?
What is an example of predation?
What effect does predation have on population size?
What is an example of a predator adaptation?
What is an example of a prey adaptation?
What is an example of mutualism?
What is an example of commensalism?
What is an example of parasitism?
