Exploring Population Dynamics and Environmental Limits

What is an ecosystem?

• A group of nonliving things

• Interactions between living and nonliving things in an environment

• A collection of only animals

• A community of only plants

Tags

NGSS.MS-LS2-3

Which of the following is a biotic factor?

• Plants

• Soil

• Water

• Sunlight

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What does biodiversity refer to?

• The number of rocks in an ecosystem

• The amount of sunlight in an ecosystem

• The variety of living things in an ecosystem

• The number of nonliving things in an ecosystem

Tags

NGSS.MS-LS2-5

How can biodiversity be increased in a classroom?

• By bringing in different types of plants and animals

• By turning off the lights

• By removing all bacteria

• By adding more desks

Tags

NGSS.MS-LS2-5

What is carrying capacity?

• The number of species in an ecosystem

• The minimum number of individuals a population can support

• The average number of individuals in a population

• The maximum number of individuals a population can support

Tags

NGSS.MS-LS2-4

What happens when a population reaches its carrying capacity?

• The population continues to grow indefinitely

• The population size stabilizes

• The population size decreases to zero

• The population size fluctuates wildly

Tags

NGSS.MS-LS2-4

Which of the following is a limiting factor?

• Availability of food

• Amount of sunlight

• Presence of rocks

• Type of soil

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is a density-dependent limiting factor?

• A factor that has a greater impact as population density increases

• A factor that only affects small populations

• A factor that only affects nonliving things

• A factor that affects population size regardless of density

Tags

NGSS.MS-LS2-4

Which of the following is an example of a density-independent limiting factor?

• Water supply

• Food availability

• Natural disasters

• Disease

Tags

NGSS.MS-ESS3-2

How does disease act as a density-dependent limiting factor?

• It spreads more easily in dense populations

• It affects all populations equally

• It only affects nonliving things

• It has no impact on population size

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4