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define species
a group of organisms that can breed to produce fertile offspring
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who is Charles Darwin?
a scientist who believed variation and inheritance causes evolution.
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define adaptation
characteristics or features of an organism that helps them to survive in their environment
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define interdependence
organisms in an environment that depend on each other for survival and compete with each other.
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name four things that can cause extinction of a species?
changes in climate, predators, disease and new species.
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what do nearly all living species depend on?
energy from the sun.
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who is Lamarck?
a scientist who believed organisms acquired characteristics in their lifetime and passed them on to their offspring
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define habitat
a place where an organism lives.
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define decomposer
microorganisms such as bacteria and fungi feed on dead r decaying organisms
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define detitivore
partly decayed material is called detritus. organisms such as woodlice and earthworms feed on detritus and break it down more.
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define evolution
species changing over time
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name 2 types of nonliving factors that indicate a change in the environment
CO2 levels and ice cores
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define mutation
a change in a species DNA
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state three types of living indicator species
phytoplankton, lichen, bloodworm, mayfly larvae
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what happened 3.5billion years ago?
it is thought that this is whne life on earth began.
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define sustainability
meeting the needs of people today without damaging earth for people of the future
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define biodiversity
the range of living species in an area.
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what is classification?
organisms are classified based on similarities and differences in characteristics and DNA
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what happened 4500 million years ago?
earth formed.
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define 'common ancestor'
a species that two or more species evolved from
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why do we classify organisms?
so that: 1) it allows us to look at evolutionary relationships 2) it allows scientists to figure out what new found organisms are
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why is biodiversity important?
1) food crops can be developed from wild plants by selective breeding 2) many medicines come from wild plants and animals
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name three important processes in the carbon cycle
respiration, combustion and photosynthesis
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which microorganism turns nitrogen into ammonia?
nitrogen fixing bacteria
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which microorganism turns ammonia into nitrates?
nitrifying bacteria
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what is the name of the soil bacteria that converts proteins and urea into ammonia?
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Card 2


who is Charles Darwin?


a scientist who believed variation and inheritance causes evolution.

Card 3


define adaptation


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Card 4


define interdependence


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Card 5


name four things that can cause extinction of a species?


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