Plz ! cultural regions can be very diverse due to which of the following reasons? i. geographers can create regions that focus on one or more cultural elements. ii. the size of the regions are always the same no matter what cultural element is being examined. iii. regions are often fluid because they can change, new ones can be created, and some can disappear. a. i. and ii. b. i. and iii. c. ii. and iii. d. i., ii., and iii.

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.