The third one and the last one.
Answer:

Explanation:
Let
x ----> the surface area of a sphere
y ---> the volume of a sphere
we know that
The ratio of surface area to volume of a sphere is equal to divide the surface area by the volume of the sphere

we have

substitute the values

Explanation:
the light energy is converted to heat energy in order to break the covalent bonds in the water molecules that are combined with CO2 to create glucose