A male strawberry dart-poison frog is looking for a mate. In order for
him to mate successfully and produce fertile offspring
O
A he must mate with another strawberry dart-poison frog
OB he must mate with a frog of the same color
O
c
he can mate with any frog that lives in the same location
OD he can mate with any type of poisonous frog

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igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this