Which statements describe the st. lawrence seaway?
the st. lawrence seaway connects the st. lawrence river with the arctic ocean.
the st. lawrence seaway provides an important trading route between the u. s. and mexico.
the st. lawrence seaway provides an important trading route for the u. s, but has little value for canada.
the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

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.