Environmental Science 2 Midterm

What does species diversity refer to in an ecosystem?

• The number of different habitats within a particular area

• The variety of species within a specific habitat

• The genetic variation within a single species

• All of the above

Which of the following is a primary cause of habitat loss?

• Clear cutting forests

• Climate change

• Urbanization

• All of the above

How does species diversity contribute to the stability of an ecosystem?

• By ensuring rapid urban development

• By increasing the dependency of species on a single food source

• By making the ecosystem more resilient to environmental changes

• By reducing the number of species in the ecosystem

What is an indicator of high biodiversity in an area?

• A large number of identical species

• A small number of habitats

• A wide variety of species

• Minimal genetic variation among species

Which of the following activities directly contributes to habitat loss?

• Recycling

• Deforestation

• Conservation efforts

• Scientific research

Why is habitat loss considered a major threat to biodiversity?

• It increases the number of predators in an ecosystem.

• It leads to a decrease in the number of species in an ecosystem.

• It promotes genetic diversity among species.

• It enhances the adaptability of species to new environments.

What role do keystone species play in maintaining species diversity?

• They prevent any new species from entering the ecosystem.

• They have no impact on species diversity.

• They help in the urbanization of natural habitats.

• They play a critical role in maintaining the structure of an ecosystem.

How can the introduction of an invasive species lead to habitat loss?

• By enhancing the ecosystem's resilience to natural disasters

• By increasing biodiversity through the addition of new species

• By outcompeting native species for resources and space

• By promoting genetic diversity among native species

Which of the following best describes the relationship between habitat loss and species extinction?

• Habitat loss has no significant effect on species extinction.

• Habitat loss is indirectly related to species extinction through climate change.

• Habitat loss is a leading cause of species extinction.

• Habitat loss increases biodiversity, which prevents species extinction.

Circle where an insect infestation happened.