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true, there are larger number of species of birds, plants, fishes, etc. near the
equator
hox clusters
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box of codes that have the same base pairs
what is the megazostrodon and how does it relate to extinction diversity?
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a small rat like mammal--> when dinosaurs became extinct, it gave this
species of mammal an advantage to diversify and this is where the rise of
mammals originated
how will loss of biodiversity impact humans? (indriectly and directly)
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-changing food supply
-disease risk
-natural resources dwindling
four compartments of physical environment
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atmosphere, oceans, fresh water, and land
describe the causes of destruction of the sonoran desert
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, -urban growth in phx
-change from desert to urban landscape changes environment of
organisms
-amensalism
-commensalism
name the three types of diversity
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alpha-diversity within a single community/habitat
beta-between habitat diversity, measure of change in species composition
between habitats
gamma-regional diversity found over range of communities of habitats in
geographic region
which phyla compose the radiata?
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ctenophore and cnidarian
functions of RNA
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, carry information and catalysts- can catalyze their own replication and
synthesis of proteins in early life
negative effects of UV?
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causes skin cancer and breaks down folic acid
which phyla composes the bilateria?
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worms
some problems faced by organisms moving onto land?
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-organisms weigh more in air than in water
-temperature extremes greater in air
-vision/hearing would have to be modified
-food supply problem (when first moving onto land, all other
organisms/prey are in water)
example of plate tectonics