Lab 11
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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Variety of living organisms
Biodiversity
Number of different alleles
Genetic
Number of different species
Species diversity
Number of different ecological functions performed by a community that maintain ecosystem stability
Ecosystem diversity
A diverse ecosystem is more resistant to
Natural disturbances or human caused disturbances
Why more diverse the Bette
Multiple species that perform the same function
Keystone species
Larger role connected to numerous other species If they disappear structure of community likely to collapse
What is a keystone in Florida
Gopher tortoise Excavated large burrows for 350 other species
How many be one extinct due to what
50,000 Habitat destruction Invasive species Overexploitatiom Pollution
What happened when a species becomes extinct
Roles in community interactions are unfulfilled
When many individuals of species lost
Genetic diversity of that population is reduced
Feeer unique genetic combinations leads to
Less fitness (increase survival and reproduction)
What are the fittest individuals
Pass the most genes into the next generation
An adaptation
Trait that is common in population because it increases fitness
Evolution by natural selection takes place and the traits that confer
The highest fitness advantage will increase in frequency
Ecological niches
Adapted to use unique combinations of biotic and abiotic factors
What do biologists use to organize diversity
Hierarchy classification system
Explain huerarch
Species closely related in genus, closely related genera in same family, families into orders, classes,phyla, kingdoms, domains
Most successful group of animals on earth
Insects