My guess is that you're wanting the formula for respiration (which is basically the opposite of the formula for photosynthesis)?
So on the left (reactant/inputs) side should be: sugar and oxygen
On the right (products/outputs) side should be:
Carbon dioxide, water, light energy/ATP
There are often not more than one or two independent variables tested in an experiment, otherwise it is difficult to determine the influence of each upon the final results. There may be several dependent variables, because manipulating the independent variable can influence many different things.
<h2>ANSWER:</h2>

<h2>
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DATA:
Force = 50N
Mass of the Body = 1kg
Acceleration = ?
<h2>_____________________________________</h2><h3>SOLUTION:</h3>
By the second law of newton,
F = ma
Rearrange the equation,
a = 
Substitute the variables in the equation,
a = 
OR,
a = 50 m/s^2
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Best Regards,
'Borz'
<h3 />
I have only heard a few phrases for spine
Backbone
Vertebrae (vertebral column)
Spinal column