The video tutorial covers the concepts of limiting factors and carrying capacity in ecology. It explains how limiting factors, both density dependent and independent, affect population growth. The tutorial also discusses carrying capacity, illustrating how ecosystems can only support a certain number of organisms. The video concludes with an examination of human population growth and its impact on Earth's carrying capacity.

What is a limiting factor in an ecosystem?

• Something that has no effect on population growth

• Something that causes population growth to increase

• Something that only affects plant populations

• Something that causes population growth to decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is NOT a density dependent limiting factor?

• Drought

• Parasitism

• Predation

• Competition

Tags

NGSS.MS-LS2-4

How does competition affect a population?

• It only affects predator populations

• It has no effect on the population size

• It decreases the population size

• It increases the population size

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What happens to the lynx population when the hare population decreases?

• The lynx population remains the same

• The lynx population decreases

• The lynx population migrates

• The lynx population increases

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

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

• Predation

• Parasitism

• Competition

• Flood

How does a drought affect populations?

• It only affects large populations

• It only affects small populations

• It affects all populations equally

• It has no effect on populations

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is carrying capacity?

• The ideal population size an area can support

• The maximum population size an area can support

• The minimum population size an area can support

• The average population size an area can support

What typically happens when a population exceeds its carrying capacity?

• The population continues to grow

• The population stabilizes

• The population crashes

• The population migrates

Tags

NGSS.MS-LS2-4

What was the approximate human population around the year 1800?

• 7 billion

• 2 billion

• 1 billion

• 500 million

What is one potential outcome if the human population exceeds Earth's carrying capacity?

• The population will continue to grow indefinitely

• The population will migrate to other planets

• New technologies and resources will sustain the population

• The population will decrease to sustainable levels

Tags

NGSS.MS-ESS3-4