Who carried the trade goods on the Silk Road between China and the western countries of India, Arabia, North Africa and Europe?
A. Chinese merchants
B. the Emperor of China
C. nomads like monks and missionaries
D. sailors

In some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of a postzygotic barrier the founder effect sympatric speciation a prezygotic barrier

Marcy tests a solution with a strip of blue litmus paper. the paper turns red. the solution is acidic basic neutral

What is the name of this mountain range found in northern africa?