Answer: without satellites there would be no way for the world to communicate
Explanation:
 
        
                    
             
        
        
        
<span>Stock market firms, also known as brokerage firms, assist in the act of buying and selling financial securities. These trades are financed through financial institutions for security.</span>
        
             
        
        
        
It can have only 16,384 number of columns
 
        
             
        
        
        
Answer:
computer means a technology or digitalized form of technology which makes student life better by giving solution to the problem and promote creativenes. 
 
        
             
        
        
        
Answer:
keylogger.
Explanation:
A keylogger can be defined as a software program or hardware device designed for monitoring and recording the keystrokes entered by an end user through the keyboard of a computer system or mobile device. 
Basically, a keylogger can be installed as a software application or plugged into the USB port of a computer system, so as to illegally keep a record of all the inputs or keys pressed on a keyboard by an end user.
In order to prevent cyber hackers from gaining access to your keystrokes, you should install an anti-malware software application such as Avira, McAfee, Avast, Bitdefender, Kaspersky, etc.
An antivirus utility is a software application or program that's used to scan, detect, remove and prevent computer viruses such as Malware, Trojan horses, keyloggers, botnets, adwares etc.
In conclusion, a bot can use a keylogger to capture keystrokes on the infected machine to retrieve sensitive information.