Environmental Science Chapter 4: Population Ecology

Front

According to the population pyramid, will this population increase, decrease, or remain stable over time?

Back

Decrease

Front

Humans have a type I survival curve. What does this mean?

Back

Their chance of survival decreases with age

Front

What are some factors that can decrease a population's size?

Back

Emigration and deaths

Front

What are some factors that can increase a population's size?

Back

Immigration and births

Front

What do we call characteristics of the environment that can limit population growth?

Back

Limiting factors

Front

What is an example of a limiting factor that is caused by the environment?

Back

Floods

Front

What is an example of a limiting factor that is caused by an organism's biotic potential?

Back

Its gestation time

Front

In which distribution pattern are individuals in a population evenly spaced out?

Back

Uniform

Front

True or False: Scientists determine population size by counting every single individual in a population.

Back

False

Answer explanation

Scientists typically use sampling techniques instead as counting individuals can be difficult for a number of reasons.

Front

True or False: Habitats and ecosystems are the same thing.

Back

False

Answer explanation

Habitats only include what an organism directly interacts with. Ecosystems are more broad.