Exploring Populations and Ecosystems

The video tutorial explains the concepts of population, community, and ecosystem. It begins by defining a population as a group of the same organisms living in an area, using examples like humans and owls. It then describes how different populations interact within a community, such as owls hunting mice in a forest. The tutorial further explores how nonliving elements like mountains and rivers interact with living communities to form ecosystems. Examples of ecosystems, such as forests and deserts, are provided, highlighting the role of abiotic factors. The video concludes by summarizing the relationships between populations, communities, and ecosystems.

What is the growth rate of the human population as mentioned in the video?

• Three people per second

• Three people per hour

• Three people per day

• Three people per minute

Tags

NGSS.MS-ESS3-4

Which of the following is an example of a population?

• Water and soil

• Plants and animals together

• A group of different animals

• All owls in a forest

Tags

NGSS.MS-LS4-4

What defines a community in ecological terms?

• All ecosystems in a region

• Nonliving elements only

• Multiple populations in an area

• A single species in an area

How do owls and mice interact in their community?

• Owls provide shelter for mice

• Mice eat owls

• There is no interaction

• Owls hunt and eat mice

Tags

NGSS.MS-LS2-2

Which nonliving component is NOT mentioned as interacting with the community?

• Sunlight

• Wind

• Rivers

• Mountains

What is an ecosystem?

• A system of only living organisms

• A system including living and nonliving things

• Interactions among nonliving things

• A community of people only

Tags

NGSS.MS-LS2-3

Which of the following is an example of a desert ecosystem component?

• Polar bears

• Fish

• Scorpions

• Moss

What completes a desert ecosystem?

• Abiotic factors

• Only biotic factors

• Only plants

• Only animals

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Which statement best describes the relationship between ecosystems and communities?

• Communities are unrelated to ecosystems

• Ecosystems encompass communities and their nonliving environment

• Communities include nonliving parts, unlike ecosystems

• Ecosystems are smaller than communities