Aunit is a body of sedimentary, extrusive igneous, metasedimentary, or metavolcanic strata which is distinguished on the basis of lithlogic (physical) characteristics and stratigraphic position.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Some species of hummingbirds have different shapes of beaks that evolved to allow them to drink from certain flowers. the flower species have evolved to produce nectar that is tasty for the hummingbirds. this example is a type of . cuckoos lay eggs in the nests of other birds. the cuckoo lays eggs identical to the eggs of the host species, so the other bird takes care of it. this is an example of .

Afrog that catches and eats a grasshopper is a what