Why is grain farming commercial agriculture ?

Most of earths fresh surface water is found in

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.

One cubic foot is equal to 7.48 gallons how many gallons of water does jose need to fill his aquarium? round to the nearest gallo