Answer: D. changes direction 
Explanation: A lens works by refraction: it bends light rays as they pass through it so they change direction.
Hope this helps
 
        
             
        
        
        
Answer:
Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. ... Pigs, sheep and cattle were domesticated over 10,000 years ago.
Explanation:
 
        
             
        
        
        
Mainly gold but others left in search of a new life on the frontier