The Microsoft button was exclusively used in the 2007 versions of word, excel, powerpoint, access and outlook. It has all of the different options like to save, print, open ect. It was located in the top left hand corner of the screen. It looked a bit like this (see attachment).
 
        
             
        
        
        
The sheave wheel is a pulley wheel that sits above the mine shaft. The hoist cable passes over the sheave wheel and then down the shaft of the mine.
(copied from google)
        
                    
             
        
        
        
Answer:
the two methods that can spread viruses are touching and breathing 
Explanation:
When there are viruses being spread breathing near another person can caused it to spread because viruses can travel through air. if the viruse is in your systems coming out through the mouth is one way it can travel to another person. That's why wearing a mask is helpful 
The other was is touching. Viruses can travel through physical contact. Is hands arent being wash regularly after eating brushing teeth etc it leaves germs and bacteria which is some of the ways and sometimes the main reason as to how viruses are made or created. That's why washing hands are important
Hope's this helps
 
        
             
        
        
        
Cloud computing is more complex than traditional approach due to the following reasons.
Explanation:
1.Cost Savings and Total Cost of Ownership. When you move to cloud computing you tend to save money in several ways in comparison to traditional IT, including the reduction of in-house equipment and infrastructure.
2.Dissatisfaction in Traditional IT. Many companies are frustrated with the negatives that come with traditional IT, such as poor data backup, managing and maintaining your own hardware, and lack of disaster recovery options. 
3.Time to Value and Ease of Implementation. Since you don’t have to spend time configuring hardware, maintain systems, and patching software, you can invest your resources elsewhere.
4.Access to Emerging Technology. Much like a car, the minute you purchase on-premise hardware and software, it immediately starts to age. You can access the latest and greatest innovations with a cloud provider who has more purchasing power and stays up-to-date with available solutions. Also, as new innovations are released, they become less likely to integrate with legacy solutions that are often inflexible. Instead, cloud-first development is coming to the forefront.
5.Using Hybrid to Optimize your Operations. Some organizations take the use of the cloud even further by using multiple clouds simultaneously, thus giving them even more agility. Workloads are placed where they perform best, and where costs are most efficient.