SB5 April ARROWS

Front

What is secondary succession?

Back

Secondary succession is the process of ecological recovery that occurs in an area where a disturbance has destroyed an existing ecosystem but left the soil intact, allowing for the reestablishment of plant and animal communities.

Front

Give an example of secondary succession.

Back

An example of secondary succession is a forest fire that burns down understory grasses and shrubs, allowing new growth to occur in the affected area.

Front

Why do giant octopuses lay so many eggs?

Back

Giant octopuses lay many eggs to increase the chance that more individuals will survive to adulthood, as most will become prey to larger marine organisms.

Front

What adaptation do cacti have for survival in arid environments?

Back

Cacti have shallow, widely spread roots that allow them to quickly collect water when it rains.

Front

What does the extinction of the passenger pigeon illustrate about human impact on ecosystems?

Back

The extinction of the passenger pigeon illustrates that human activities can irreversibly affect ecosystems.

Front

What is carrying capacity in an ecosystem?

Back

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

Front

What is the role of disturbances in ecological succession?

Back

Disturbances, such as fires or floods, create opportunities for new species to establish and can lead to changes in community structure.

Front

What is the difference between primary and secondary succession?

Back

Primary succession occurs in lifeless areas where soil has not yet formed, while secondary succession occurs in areas where a disturbance has destroyed an ecosystem but left the soil intact.

Front

How do shallow roots benefit cacti?

Back

Shallow roots allow cacti to quickly absorb water from light rains, which is crucial for their survival in dry environments.

Front

What is an example of a human activity that can lead to species extinction?

Back

Habitat destruction, such as deforestation or urban development, is a human activity that can lead to species extinction.