Multiple Choice
Which two regions currently contain the world’s last remaining ice sheets?
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48. Ecology
Introduction to Ecology
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Which of the following human activities most commonly leads to the formation of habitat 'islands' (patches of wild areas or isolated natural habitat) in an ecosystem?
A
Building roads and urban developments that fragment continuous habitats
B
Planting native vegetation in urban parks
C
Introducing non-native species into an ecosystem
D
Increasing the population of a keystone predator
Verified step by step guidance1
Understand the concept of habitat 'islands': These are patches of natural habitat that become isolated due to human activities, disrupting the continuity of ecosystems and affecting species movement and survival.
Analyze the options provided: Consider how each activity impacts the ecosystem and whether it leads to fragmentation or isolation of habitats.
Option 1: Building roads and urban developments. Roads and urbanization often divide continuous habitats into smaller, isolated patches, creating habitat 'islands' and limiting species' ability to migrate or interact.
Option 2: Planting native vegetation in urban parks. While this activity supports biodiversity, it does not typically lead to habitat fragmentation or isolation; instead, it may help restore some ecological balance.
Option 3 and 4: Introducing non-native species and increasing keystone predator populations. These activities can impact ecosystems but are not directly linked to the creation of habitat 'islands'. Focus on the activity that physically fragments habitats, such as building roads and urban developments.
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