Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

Ascientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. which biological component would be best to use as a model for the pill's function? bacteriocytes phagocytes complement antibodies

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird