Download Review: photosynthesis cellular respiration pyramid of energy

lesson5.notebook
September 24, 2013
Review:
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photosynthesis
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cellular respiration
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pyramid of energy
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pyramid of biomass
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pyramid of numbers
Mar 1­3:24 PM
Niche, Habitat, and Competition
(a) Niche:
Role that a species plays in its ecosystem
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each species occupies its own niche
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what it does to survive
Ex. bee transports pollen for flowers
Mar 1­3:27 PM
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lesson5.notebook
September 24, 2013
(b) Habitat: place an organism lives
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each organism has its own habitat
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its habitat is where it is best adapted to survive
Ex.
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a fish lives in the water because it has gills
habitat include factors that limit the kinds and number of organisms that can live there
Ex. goldfish can only live in fresh water
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a single area may satisfy the needs of many kinds of plants and animals
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organisms that associate in a common habitat are called a community
Ex.
a freshwater lake community
Mar 1­3:29 PM
Mar 4­7:59 AM
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lesson5.notebook
September 24, 2013
Competition:
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struggle between organisms to survive
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exists in every ecosystem
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organisms must compete against their own species and different species in order to survive
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the stronger organisms have an advantage over those who are weaker
(survival of the fittest)
Mar 1­3:33 PM
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competition arises when organisms share common requirements for survival
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the more needs that organisms have in common the more intense the competition
Ex. foxes and coyotes in Newfoundland
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when resources become scarce competition increases and could lead to the elimination of species
Mar 4­7:35 AM
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lesson5.notebook
September 24, 2013
Intraspecific Competition:
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competition between the same species
Ex. crows competing over the same road kill
Interspecific Competition:
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competition between different species
Ex. lion and hyena competing over a zebra
NOTE:
­ when competition occurs those with the most useful adaptations will survive while less adapted will not
Mar 4­7:42 AM
Mar 4­7:56 AM
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lesson5.notebook
September 24, 2013
Mar 4­7:59 AM
Readings:
Pages 40 ­ 44
Questions:
Page 44: #'s 1,2,3,4
Photosynthesis Song
Mar 4­7:45 AM
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