Biodiversity and Changes in Ecosystems

Biodiversity can affect the ________ of ecosystems and the _________ of populations.

• sustainability and stability
• stability and sustainability
• life and existence
• existence and life

which of the following is not a level of bioidiversity?

• species
• ecosystem
• population
• genetic

Which is NOT a benefit of biodiversity? 

• agriculture 
• medicine
• ecotourism
• deforestation 

Why are invasive species a threat to biodiversity?

• they can outcompete native organisms for their resources 
• they can cause harm to the environment
• they can be harmful to humans 
• all statements are true 

_____ species is a non-native plant/animal introduced accidentally or intentionally by humans 

• extinct
• endangered
• threatened
• invasive (exotic) 

Which of the following forbids the U.S. government and its citizens from harming endangered or threatened species and their habitats?

• the Environmental Protection Agency
• Species Survival Plan
• the Endangered Species Act
• The Convention on International Trade in Endangered Species

Biodiversity refers to

• extinct species
• the variety of species on Earth
• nonrenewable resources
• the rate of species decline

Which level of biodiversity includes  the available habitat in an area?

• Species diversity
• Genetic diversity
• Ecosystem diversity
• All of these

What is the Simpson Index for the following community?  What is the effective number of species? (5 points)
Species A: 23
Species B: 12
Species C: 3
Species D: 32

• 0.46, 2.71
• 0.35, 4.22
• 0.35, 2.86
• 0.46, 2.17

The Asian Carp and the Zebra Mussel are invasive species that are found in...

• The Great Lakes
• The Desert 
• The Amazon
• The Polar Caps