Weather maps use isobar lines to show weather conditions. which of the following information is indicated by these lines? a: high and low-pressure areas b: high and low temp c: precipitation level d: cloud formation

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.

Which are reasons cells undergo cell division?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.