The von Thunen model of agricultural land use states all of the following ex A. most perishable items are cultivated nearest the city
B. the location of agriculture depends on transportation costs
C. the epicenter is the least profitable land for farming
D. land close to town is worth more
Please select the best answer from the choices provided.
A

Ageologist is working in an area with exposed sedimentary rocks and finds a well exposed sequence of stratified rocks. as he works through a thick sequence of limestone, he sees abundant large clam fossils that produce an interlocking texture suggesting a reef, but within the limestone section these clams disappear and the overlying limestone is made up primarily of fragments of corals. he now moves 50 km away and finds limestones interbedded with shales, and the limestones contain the same clam fossils he had seen previously 50 km away. as he continues through this section, the rocks become entirely limestone, and the clams disappear again with coral fossils above forming a reef structure. he concludes