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used for identification or organisms
hollow bones in birds
change for survival
differences between organisms of the same species
dichotomous keys
when humans breed for a favorable trait
to give them structure and the ability to fly
natural selection
get oxygen out of the water
A variation is ...
hollow bones in birds
change for survival
differences between organisms of the same species
dichotomous keys
when humans breed for a favorable trait
to give them structure and the ability to fly
natural selection
get oxygen out of the water
Why do birds have hollow bones?
hollow bones in birds
change for survival
differences between organisms of the same species
dichotomous keys
when humans breed for a favorable trait
to give them structure and the ability to fly
natural selection
get oxygen out of the water
Selective breeding is ...
hollow bones in birds
change for survival
differences between organisms of the same species
dichotomous keys
when humans breed for a favorable trait
to give them structure and the ability to fly
natural selection
get oxygen out of the water
Which is an example of an internal structure adaptation?
hollow bones in birds
change for survival
differences between organisms of the same species
dichotomous keys
when humans breed for a favorable trait
to give them structure and the ability to fly
natural selection
get oxygen out of the water
Which is not an example of variations in organisms?
hollow bones in birds
change for survival
differences between organisms of the same species
dichotomous keys
when humans breed for a favorable trait
to give them structure and the ability to fly
natural selection
get oxygen out of the water
An adaptation is ...
hollow bones in birds
change for survival
differences between organisms of the same species
dichotomous keys
when humans breed for a favorable trait
to give them structure and the ability to fly
natural selection
get oxygen out of the water
How do gills help fish survive?
hollow bones in birds
change for survival
differences between organisms of the same species
dichotomous keys
when humans breed for a favorable trait
to give them structure and the ability to fly
natural selection
get oxygen out of the water
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