A. name all of the countries of north america, middle america, south america, and europe that are landlocked. b. write a short essay about one of the states of the usa (fill in the space below at least, and use the back page if you need more space - don't be economical ! )

15 points need quick 1. looking at your graph and the geologic time scale during what period did this rock form? what is the age span of the rock, in millions of years? 2. this rock sample is limestone and shale. with what you know about rock formation, what type of environment did these organisms live in? 3. if some of these fossil samples were found in a rock also containing leaf fossils, could you use radiocarbon dating to determine the age of this rock? explain.