80-100km or 50-60 miles thick
        
                    
             
        
        
        
Their are three main characteristic is intensity, saturation, and hue .
Red color is motivated by power, black is achromatic color with hue  like white gray and white.black is symbol of darkness.  Brightly co-loured object is one that reflects and transmits a large portion of light falling on it. 
The great amount of light is reflected on white screen while a black screen would not reflects any light. Co-lour  also linked with various personality trait , motivation and productivity levels in life. It symbolize life and death , love and evil and happiness and anger.Red color makes you feel passionate and energized.
To learn more about motivation here
brainly.com/question/972761
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Answer:
When heated too much, enzymes (since they are proteins dependent on their shape) become denatured. When the temperature drops, the enzyme regains its shape. ... Changes in pH will also denature the enzyme by changing the shape of the enzyme. Enzymes are also adapted to operate at a specific pH or pH range.
 
        
                    
             
        
        
        
Answer:
D) Three of the reaction steps in gluconeogenesis would have prohibitively large, positive free energies if they used glycolytic enzymes for their catalysis.
Explanation:
The glycolytic enzymes catalyze the conversion of glucose to pyruvate, while gluconeogenesis enzymes catalyze the formation of carbohydrates from pyruvate.