year 10 biodiversity revision

In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

• There would be an overpopulation of arctic hares and lemmings.
• Polar bears would move to a new ecosystem
• The ecosystem would collapse because it lost its main producer
• Wildflowers would die out from the ecosystem

Which of the following describes the variation in genes that exist within a species?

• genetic diversity
• species diversity
• ecological diversity

Biodiversity describes the variety of life across levels of ecological organization.

• True
• False

Which of the following describes the number of species and abundance of each species that live in a particular location?

• genetic diversity
• species diversity
• ecological diversity

Which is an example of genetic biodiversity?

• Different skin color within a species.
• Different types of species in an ecosystem. 
• Every organism has the same genetic sequence. 
• All populations look identical within a species. 

Which ecosystems has the greatest amount of biodiversity?

• polar regions
• deciduous forest
• tundra
• tropical rainforest

What is protecting Biodiversity?

• Protecting an individual endangered species or entire ecosystem

• Harming an entire ecosystem

• Contaminating the environment with pollution

• All of the above

Soil erosion can increase when humans remove trees and other vegetation from an area. What is this process called?

• decomposition

• conservation

• deforestation

• urbanization

What is Deforestation?

• A forest in which there are too many deers.
• A forest party where deers hang out
• The adding of trees in a forest.
• The clearing of trees; transforming of a forest into cleared land.

the trend of increasing global temperatures

• global warming
• ozone layer
• greenhouse effect
• acid rain