Understanding Abiotic and Biotic Factors

Which of the following is NOT an abiotic factor?

• Water

• Temperature

• Plants

• Sunlight

Fill in the blank: Living components of an ecosystem are known as _______ factors.

• Abiotic

• Biotic

• Chemical

• Physical

Which of the following is an example of a biotic factor?

• Soil pH

• Sunlight

• Fungi

• Temperature

Inbreeding is the mating of closely related individuals, which can reduce genetic diversity and increase the risk of ________.

• happiness

• genetic disorders

• intelligence

• speed

Inbreeding in small populations of animals, like cheetahs, can lead to ________.

• stronger offspring

• weaker offspring

• faster offspring

• more colorful offspring

What was the population of song sparrows on Mandarte Island in 1981?

• 40

• 80

• 120

• 160

Between which years did the song sparrow population increase the most?

• 1977-1981

• 1985-1989

• 1991-1995

• 1989-1993

What was the trend in the song sparrow population from 1981 to 1985?

• Increasing

• Decreasing

• Stable

• Fluctuating

What are the strongest factors affecting breeding success in sparrows?

• Female age and breeding density

• Temperature and humidity

• Food availability and predators

• Migration patterns

Fill in the blank: The factors that have the strongest effect on breeding success are female age and ________.

• Migration

• Breeding density

• Food supply

• Nesting material