Answer:
C. 100
D.3
E. 33.3
Explanation:
C. Mechanical Advantage=Load / Effort
 = 200N
 --------
 100N
 Therefore,. = 100
D. I. Velocity Ratio= distance moved by the effort / distance moved by load
 = 30cm/10cm
 = 3
II. Efficiency= M.A / V.R
 = 100/3 
 = 33.33
 
        
             
        
        
        
Answer: because increasing biodiversity can influence ecosystem functions such as productivity and variety and even the likelihood that a particular species is discovered by a comminity
Explanation:
 
        
             
        
        
        
The distance an object falls from rest through gravity is
                         D  =  (1/2) (g) (t²)
            Distance  =  (1/2 acceleration of gravity) x (square of the falling time)
We want to see how the time will be affected 
if  ' D ' doesn't change but ' g ' does. 
So I'm going to start by rearranging the equation
to solve for ' t '.
                                                      D  =  (1/2) (g) (t²)
Multiply each side by  2 :         2 D  =            g    t²  
Divide each side by ' g ' :      2 D/g =                  t² 
Square root each side:        t = √ (2D/g)
Looking at the equation now, we can see what happens 
to ' t ' when only ' g ' changes:  
-- ' g ' is in the denominator; so bigger 'g' ==> shorter 't'
                                             and smaller 'g' ==> longer 't' .
-- They don't change by the same factor, because  1/g  is inside
the square root.  So 't' changes the same amount as  √1/g  does.
Gravity on the surface of the moon is roughly  1/6  the value
of gravity on the surface of the Earth.
So we expect ' t ' to increase by  √6  =  2.45 times.
It would take the same bottle  (2.45 x 4.95) = 12.12 seconds
to roll off the same window sill and fall 120 meters down to the
surface of the Moon.