Mutations. Definition. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
        
             
        
        
        
A  example of a nerve cell is a nerve cell
        
             
        
        
        
Endocrine system regulation slowly happens but produces long-lasting effects, whereas nervous system regulation quickly takes place with short-term effects.
Endocrine system can regulate many things in the body that control the metabolism. The effect shouldn't be instant, but it should be good for long term effect. Nervous system need a much faster reaction because it responsible for "fight or flight" reaction. A slow nervous system will cause the organism caught by predator easier.
 
        
             
        
        
        
Answer:
both aerobic respiration and fermentation produces carbon dioxide as a product but however fermentation occurs without oxygen and this was seen in the experiment.
 
        
             
        
        
        
Explanation:
 Frequency Range
1 Radio waves >0.1m <3×10 
9
 ㎐
2 Micro waves 0.1m−1㎜ 3×10 
9
 to 3×10 
11
 ㎐
3 Infrared 1㎜ to 7000A° 3×10 
11
 to 4.3×10 
17
 ㎐
4 Visible light 7000 to 4000A° 4.3×10 
14
 ㎐ to 7.5to10 
14
 ㎐
5 Ultraviolet 4000A° to 10A° 7.5×10 
17
 to 3×10 
17
 ㎐
6 X-Rays 10A° to 0.01A° 3×10 
17
 to 3×10 
20
 ㎐
7 Gamma Rays <0.01A° >3×10 
20
 ㎐