Lesson 2 Maintaining Biodiversity

​In what ways is biodiversity threatened?

Multiple Choice

Scientists can use aerial photos to collect data to determine the biodiversity index of an area

• True

• False

Multiple Choice

An ecosystem with a large number of individuals can have a low biodiversity

• True

• False

Multiple Choice

Resilience describes an ecosystem's ability to maintain dynamic equilibrium.

• True

• False

Multiple Choice

Which of the following is NOT a method scientists use to measure the biodiversity of an area?

• canopy fogging

• transect sampling

• biological control

• aerial photos

Multiple Choice

Which of the following describes a taiga?

• warm and moist

• exists only in the northern hemisphere

• treeless

• mostly deciduous trees

Multiple Choice

Which of the following is NOT a main type of ecosystem service?

• restoring

• supporting

• provisioning

• cultural

Multiple Choice

Which of the following is an example of a supporting ecosystem service?

• nutrient cycling

• recreation

• tourism

• habitat restoration

Multiple Choice

Earth has major land biomes.

• 7

• 4

• 2

• 6

Multiple Choice

Which is NOT an aquatic ecosystem?

• freshwater

• taiga

• estuary

• wetland

Multiple Choice

Which statement is true of ponds but NOT lakes?

• Plants surround the shore

• Surface water contains organisms that use sunlight for photosynthesis

• Sunlight reaches the bottom of the body of water.

• People fill them in with sediment to create land for houses and other structures.

Multiple Choice

Which of the following is NOT a method used for controlling invasive species?

• the use of herbicides

• weeding

• reclamation

• the use of other species

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​There are five major threats to biodiversity :

1. Habitat destruction

2. Invasive species

3. Pollution

4. Overexploitation

5. climate change​

​Invasive species

is an organism that is introduced into an ecosystem either by accident or on purpose that spreads on its own and outcompetes native species for resources such as space food light and nutrients ​

​Habitat Destruction

Cutting down forests

draining wetlands

changing a habitat so much that it is no longer usable by the organisms​

​Overexploitation

is the overuse of animals and plants species by humans for food medicine or clothing ​

​Climate change

changes in climate patterns over time

Increase in Earth's average surface temperature (land and oceans) global warming ​

Multiple Choice

Which of the following can cause pollution?

• Noise

• Chemicals

• All of these

• Garbage

Multiple Choice

Maintaining ________ is important to keep an ecosystem healthy.

• pollutants

• biodiversity

• sunlight

• interactions

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Multiple Choice

A wetland being drained so a housing development can be built is an example of

• A) habitat destruction

• B) overexploitation

• C) pollution

• D) conservation

Multiple Choice

Climate change is a threat to biodiversity on Earth.

• True

• False

Multiple Choice

Which of the following is NOT one of the five major threats to biodiversity?

• A) habitat destruction

• B) invasive species

• C) overexploitation

• D) reclamation