8. light and dark purple, rose pink, colourless, green, yellow orange, smokey...
9. Russia...
10. largest copper mine is found in Utah... copper is mostly used in electrical generators and motors and for electrical wiring, this is because it is such a good conductor of electricity...
11. titanium is mainly mined in Western Australia... it is used in the medical field for implants and replacement such as hip bones...
12. lead from pencils is found in your home..it is know as Galena and is mined in USA...
hope this helps you alot!!
        
             
        
        
        
Competitive advantages of apple were; 
Apple preferred Horizontal and vertical integration around its products instead of licensing it or making it open market or sharing the technology.
Easy to use- they focused on ease of operation and simple user interface.
Facility of plug and play so that non-technical users do not face any issues.
Uniqueness and innovation in enhancing consumer's digital life for example- Digital Hub- an advantage for consumers who were becoming entrenched in a digital lifestyle, using digital cameras, portable music players and digital camcorders and mobile phones.
Investment in R&D brought the key competitive advantage to apple.
        
             
        
        
        
There are different types of biomes but,here`s my example
https://www.google.com/url?sa=i&source=images&cd=&ved=2ahUKEwjBhKrevPjeAhXym-AKHZrCCFsQjRx6BAgBEAU&url=https%3A%2F%2Fkidsbiology.com%2Fbiology-basics%2Fpolar-ice-biome%2F&psig=AOvVaw0ggrhmzAXQiH3vAVGusTXb&ust=1543542147595612
 
        
             
        
        
        
Naturally occurring compounds in earth are called salt