<span>A. Color is not an observable phenomenon.</span><span> 
B. It does not attempt to explain the natural world.</span><span> 
C. The experimental group would be too large.</span><span> 
D. How people experience color varies.
I think it would be B or D, you can analyze them both and I'm sure you'll come up with an answer ;)</span>
        
                    
             
        
        
        
The answer was Carbon Dioxide 
I hope that helps you
 
        
             
        
        
        
C.  Solar energy's whole purpose it to reduce pollution in the air that fossil feuls do not. The answer cannot be A. B. or D. because 1. it is expensive 2. it can only be used during the daytime. It is a SOLAR panel. and 3. like is said earlier it is not free.
 
        
                    
             
        
        
        
Answer:
The correct answer is - 25600 bacteria.
Explanation:
Bacteria can divide and produce double their population very quickly. As mentioned in the question bacteria multiply every 15 minutes to their double number. Finding the number of bacteria after 2 hours is simple mathematics. Two hours means 120 minutes and dividing it to 15. The result will be 8 which mean the bacteria double their colony 8 time so,
100×2 to the power 8 = 100 (initial number of bacteria)×2×2×2×2×2×2×2×2= 25600
Thus, the correct answer is option- 25600 bacteria.
 
        
             
        
        
        
There are several types of microscopes: compound microscopes 0 the most commonly used microscope, uses light illumination and the image that is seen is two dimensional, stereoscope- uses light illumination and the image that appears is 3 dimensional, confocal microscope - uses laser light ,scanning electron microscope - uses electron illumination.