Answer:
for no.2 true and for Ctrl-Z False
Explanation:
Ctrl-z is and "undo" shortcut
not really sure about no.1 though, sorry :(
 
        
             
        
        
        
Answer:
A. mining all product reviews from an online store for further processing.
Explanation:
 
        
                    
             
        
        
        
Answer: 3. HTML focuses on a web page's structure and CSS focuses on its presentation.
Explanation: HTML is designed to allow you to add the content and format it correctly. However, CSS's job is to allow for stylizing. 
 
        
             
        
        
        
Explanation:
jdbfifnmathljnfeijrjdjej.http.com
 
        
             
        
        
        
Answer: jpeg becauuse itss correct