The correct answer is letter B. The microphone is the part of the telephone the converts sound waves into electrical signals that can be sent through the phone line and then towards the receiver on the other side. The telephone is one of the most important inventions made by man as it allowed communication to speed up through time.
        
             
        
        
        
The correct answer is C. Fermentation makes NAD+ needed to keep glycolysis going. The other options are inaccruate since:
for A: there are types of fermentation that does not produce carbon dioxide like Lactic acid fermentation
for B: many types of fermentation only occurs in the absence of oxygen (anaerobic process)
for B: respiration produces around 36 ATP while fermentation only generates around 2 ATP
        
             
        
        
        
Answer:
change in temperature 
change in color
noticeable odor after reaction has begun
formation of precipitate
formation of bubbles
 
        
                    
             
        
        
        
Answer:
Carbohydrates are used by the body for energy and structural support in cell walls of plants and exoskeletons of insects and crustaceans. They are made of smaller subunits called monosaccharides. Monosaccharides have <u>carbon</u>, <u>hydrogen</u>, and <u>oxygen</u> in a 1:2:1 ratio.
Difinition of disaccharides: any of a class of sugars whose molecules contain two monosaccharide residues.
Make an example...
 Short carbohydrate chains are called <u>oligosaccharides</u> and contain 3 to 10 sugar molecules. Long carbohydrate chains can contain hundreds or even thousands of monosaccharide units. molecule of <u>glucose</u> and one molecule of <u>fructose</u> joined together.
Explanation:
Enjoy 
 
        
             
        
        
        
Answer:
Syrup
Explanation:
The arrangement according to density; Syrup, water,cooking oil and alcohol.
The higher the density the heavier the substance, therefore the substance with the highest density, sinks first and the substance with the lowest density is left to float.