Environmental Science 2nd Benchmark Review 24.25

Front

What are pioneer species?

Back

Pioneer species are the first organisms to colonize an area and begin the process of ecological succession.

Front

Give examples of pioneer species in primary succession.

Back

Mosses and lichens are examples of pioneer species in primary succession.

Front

What happens if a population grows past its carrying capacity?

Back

The population starts to die off.

Front

Define invasive species.

Back

An invasive species is a plant or animal that does harm in its non-native environment.

Front

What is primary succession?

Back

Primary succession is the process of ecological change that occurs in an area with no soil.

Front

What is carrying capacity?

Back

Carrying capacity is the maximum population size that an environment can sustain indefinitely.

Front

What role do pioneer species play in an ecosystem?

Back

Pioneer species help to create soil and establish conditions for other species to thrive.

Front

What is the difference between primary and secondary succession?

Back

Primary succession occurs in lifeless areas without soil, while secondary succession occurs in areas where a disturbance has destroyed an existing ecosystem but soil remains.

Front

What are some effects of invasive species on native ecosystems?

Back

Invasive species can outcompete native species for resources, disrupt food webs, and alter habitats.

Front

What is ecological succession?

Back

Ecological succession is the process by which ecosystems change and develop over time.