Answer:
2. Information can be stored for future recovery.
3. Digital signals can be transmitted over long distances.
Explanation:
This world is moving towards digitalization. The digital signals are able to transmit the data over long distance. This has squeezed the world information and the data are run to distant places within seconds. The information on digital signals can be stored for later use.
 
        
             
        
        
        
Answer:
hope you like it
Explanation:
Examples of sentences written from the third person point of view: She went to the library to consult with the reference librarian about her paper's topic. When he got to his car, he was glad to see that his friend was waiting for him.
 
        
             
        
        
        
The answer is 
C. The way the layer interacts with the layer below it.
        
             
        
        
        
Answer:
The atmosphere is a closed system
Explanation:
Because inside the atmosphere open system
 
 
        
             
        
        
        
Answer:
The correct answer will be- the color change will be observed and the solution will turn purplish-black.
Explanation:
Iodine test is performed to test the presence of the carbohydrates mainly starch.
The iodine solution is chemically called potassium iodide which forms a yellow solution. The potassium iodide solution forms a complex with a starch solution which appears a purplish-black color which shows the presence of the carbohydrates.
In the given question, if we add the iodine solution to the beaker after a certain point of time then it will still form a complex with the starch and thus beaker solution will appear darker in color.