Carbon dioxide is a byproduct of respiration while oxygen is a byproduct of photosynthesis.
Remember that a byproduct is a secondary product that is made in the synthesis of another. It is unintended and excreted.
Yes as both play a vital role in your body
That would be A.
Dicots grow flowers with petals in multiplies of 4 and 5, monocots in multiples of 3. See the attached pic:)
Partly genetic from body type, but most of it has to be acquired to be able to be good at athletic abilities <span />