Unit 2 Biodiversity Flashcards
Biodiversiy
All of the differences found among different species and among individuals of the same species.
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#of organisms
factors that increase number of organisms
-increase reproducion
-increase survival rates
adaption
genetic trait that helps an organism survive or reproduce (trunk on an emephant)
factors that increase biodiversity
sexual reproduction
sexual reproduction
-formation of gametes
-allows genetic to be shared from different individuals
-crossing over during meiosis
-mutations
gametes
(marriage)
eggs/sperm during meiosis
mutations
mistakes/errors that occur when DNA replicates (bad/deadly)
habitat
the place in an ecosystem where an organism lives.
niche
the functional role that an organism plays in its ecosystem (tiger-predator/carnavor)
Resources
all of the items gathered from living organisms and non-living parts of the environment that fill an organism’s wants/needs
competition
the struggle between organisms for a resource in short supply
tolerance
an organismm’s ability to withstand a range of values for a chemical or physical factor in the environment