Ecosystems Unit 3 Test

the variety of organisms on Earth or in a particular habitat or ecosystem

• Biodiversity
• Proportion
• Niche
• Extirpation
• Keystone Species

a characteristic of organisms that makes it unlikely for them to be infected with or die from diseases

• Ecosystem Service
• Natural Resource
• Disease Resistance
• Scavenger

a long-term change in climate patterns on Earth, including changes in average global temperatures and the frequency of severe weather

• Climate Change
• Per Capita
• Over-Exploitation
• Emerging Disease
• Habitat Degradation

a disease that has recently appeared in human populations, often as a result of new interactions with species in ecosystems

• Emerging Disease
• Per Capita
• Over-Exploitation
• Habitat Degradation
• Invasive Species

changing or destroying natural ecosystems in ways that disrupt their healthy functioning

• Habitat Degradation
• Per Capita
• Over-Exploitation
• Emerging Disease
• Invasive Species

a species that has been introduced to a place where it is not naturally found and causes ecological or economic harm

• Invasive Species
• Per Capita
• Over-Exploitation
• Emerging Disease
• Habitat Degradation

harvesting species from the wild faster than those populations can recover, resulting in population decline

• Over-Exploitation
• Per Capita
• Emerging Disease
• Habitat Degradation
• Invasive Species

a measure of something per person; for example, per capita income is the ratio of total income to people

• Per Capita
• Over-Exploitation
• Emerging Disease
• Habitat Degradation
• Invasive Species

a natural process humans rely on that healthy ecosystems provide, such as cleaning water and conserving soil

• Ecosystem Service
• Natural Resource
• Disease Resistance
• Scavenger

a material or source of energy found in nature that benefits humans

• Ecosystem Service
• Natural Resource
• Disease Resistance
• Scavenger