What are two measures introduced by the US and local governments to reduce the consumption of gas?
introduction of railways
construction of freeways
introduction of light-rail
use of gasoline engines
use of carpool lanes

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.