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12 Cards in this Set
- Front
- Back
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5 spheres? |
Atmosphere Lithosphere Geosphere Hydrosphere Biosphere |
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Atmosphere %? |
O2: 21% N2: 78%
Other gases 1% |
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Hydrosphere |
Solid liquid and gas water |
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Producers... |
Take energy from the sun and turn it into chemical energy |
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Producers... |
Take energy from the sun and turn it into chemical energy |
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5 types of consumers |
Herbivore Carnivores Omnivores Decomposers Scavenger |
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Pyramid of numbers |
Number of individuals per area
Large number of producers Small number of top carnivore |
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Pyramid of numbers advantages and disadvantages |
A
Gives overview Comparing changes
D
Numbers can be too great to measure Does not count juveniles or immature Regardless of size |
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Open vs Closed Populations |
Open- affected by all 4 factors Closed- only affected by births and deaths |
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Factors that limit Pop size |
Birth potential: Max offspring per birth
Capacity for survival: # of offspring that reach reproductive age
Procreation: # of times a species reproduces each year
Length of reproductive cycle: age of sexual maturity and # of years an individual can reproduce |
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Environmental limiting factors |
Biotic : food availability, # of predators, diseases and competition for resources
Abiotic: sunlight, temperature and precipitation |
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Carrying capacity |
Max # of individuals in a species that can be supported by an Eco system |
