The Ames in Frick Park is a very fossil rich unit in Pennsylvania. All of the fossils are marine and include brachiopods, crinoids, horn corals, pelecypods, and gastropods. Also, fish teeth can be found in the Ames. The fossils are formed in limestone of the Pennsylvanian Period, 300 million years ago. This fossil record for this time period in Pennsylvania indicates that the environment was a .

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it