Answer:
It can either be food, mating, or competition with other organisms for resources.
 
        
             
        
        
        
I believe it is the first one
        
             
        
        
        
Answer:
Going by EM SPECTRUM WE HAVE
radio waves, microwaves, infrared, VISIBLE LIGHT, ultraviolet, X-rays, GAMMA RAYS
Explanation:
BECAUSE 
V= WAVELENGTH/ FREQUENCY
AS FREQUENCY INCREASES WAVELENGTH DECREASE AN VICE VERSA
 
        
             
        
        
        
1. 
Explanation:
We have:
 voltage in the primary coil
 voltage in the primary coil
 voltage in the secondary coil
 voltage in the secondary coil
The efficiency of the transformer is 100%: this means that the power in the primary coil and in the secondary coil are equal

where I1 and I2 are the currents in the two coils. Re-arranging the equation, we find

which means that the current in the secondary coil is 14% of the value of the current in the primary coil.
2. 5.7 V
We can solve the problem by using the transformer equation:

where:
Np = 400 is the number of turns in the primary coil
Ns = 19 is the number of turns in the secondary coil
Vp = 120 V is the voltage in the primary coil
Vs = ? is the voltage in the secondary coil
Re-arranging the formula and substituting the numbers, we find:

 
        
             
        
        
        
I assume the block plows into the bank of sand with a velocity of 6 m/s and comes to a stop in 2 s.
