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Ecosystems
Artificial ecosystems can be carefully
controlled
Woodlands and lakes are natural
ecosystems
Greenhouses are artificial ecosystems
Fish farms are artificial ecosystems used to
rear fish
Many ecosystems are still unexplored…read more

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Classification
Classification is organizing living organisms
into groups
Living things can be plants, animals, fungi,
bacteria or protoctista
Vertebrates have backbones
Invertebrates have no backbones…read more

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Species
The binomial system gives everything a two-
part name
Things of the same species can breed to
produce fertile offspring
Unrelated species may have similar features
Keys are used to identify creatures…read more

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Populations
Estimate population sizes using a quadrat
Estimating population sizes using mark-
release-capture
Two important points about these methods:
> Sample size affects the accuracy of the estimate
> The sample may not be representative of the
population…read more

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Photosythesis
Photosynthesis produces glucose from
sunlight
Glucose is converted into other substances
> Respiration
> Store in seeds
> Making proteins
> Making cell walls
> Stored as starch…read more

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