An ecosystem is all the living thing in an area, along with their environment

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

What is the 77 element on the periodtic table

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.