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lesson5.notebook September 24, 2013 Review: photosynthesis cellular respiration pyramid of energy pyramid of biomass pyramid of numbers Mar 13:24 PM Niche, Habitat, and Competition (a) Niche: Role that a species plays in its ecosystem each species occupies its own niche what it does to survive Ex. bee transports pollen for flowers Mar 13:27 PM 1 lesson5.notebook September 24, 2013 (b) Habitat: place an organism lives each organism has its own habitat its habitat is where it is best adapted to survive Ex. 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 a single area may satisfy the needs of many kinds of plants and animals organisms that associate in a common habitat are called a community Ex. a freshwater lake community Mar 13:29 PM Mar 47:59 AM 2 lesson5.notebook September 24, 2013 Competition: struggle between organisms to survive exists in every ecosystem organisms must compete against their own species and different species in order to survive the stronger organisms have an advantage over those who are weaker (survival of the fittest) Mar 13:33 PM competition arises when organisms share common requirements for survival the more needs that organisms have in common the more intense the competition Ex. foxes and coyotes in Newfoundland when resources become scarce competition increases and could lead to the elimination of species Mar 47:35 AM 3 lesson5.notebook September 24, 2013 Intraspecific Competition: competition between the same species Ex. crows competing over the same road kill Interspecific Competition: 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 4 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 5