Exploring Population Limiting Factors

The video tutorial covers factors affecting population size, including births, deaths, immigration, and emigration. It explains the difference between abiotic and biotic factors, providing examples of each. The concept of carrying capacity is introduced, along with limiting factors that stabilize population size, such as competition, predation, and natural disasters.

Which of the following is NOT a factor that affects the population size of a herd of gazelle?

• Deaths

• Births

• Immigration

• Climate

What is the term for species entering a population?

• Colonization

• Migration

• Immigration

• Emigration

What does the prefix 'bio' mean?

• Life

• Air

• Earth

• Water

Which of the following is an abiotic factor?

• Insect

• Tree

• Bacteria

• Temperature

A dead tree lying in the woods is considered:

• Abiotic

• Biotic

• Both

• Neither

Smoke coming out of a factory is an example of:

• Biotic

• Neither

• Abiotic

• Both

What is the maximum number of individuals that an environment can support called?

• Carrying capacity

• Sustainability

• Population limit

• Environmental threshold

Which of the following is NOT a factor that limits carrying capacity?

• Competition

• Predation

• Disease

• Migration

What happens when a population reaches its carrying capacity?

• It fluctuates wildly

• It decreases rapidly

• It stabilizes

• It continues to grow

Which of the following is a limiting factor that stabilizes population size?

• Old age

• Immigration

• Climate change

• Birth rate