Can you help me with this one pls

a. IV - Different Colored Light Bulbs used on tomato plants

b. DV - Growth, and effects that occur to plant

c. Control = The 5th plant that goes under a typical white light bulb.

d. 3 Constants Include:

-Amount of time plants are under each light (12 hr period)

-Same amount of water given to each plant

-Same type and amount of soil given to each plant.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-