Logical chemistry question.

a great scientist in search of a new chemical discovered a chemical X on this very day many many years ago. in his journal he reported the following observations about chemical X.
(a)- the chemical X is taken up by the plants and comes out of the leaves through the ___________ .
(b)- planet __________ has maximum abundance of this chemical X.
(c)- the planet mostly appears _________ in color due to the presence of this chemical X.
(d)-combustion of ___________ gas produces only chemical X.
(e)- chemical X is commonly called as ____________.
please answer this question with reasons.

a. pores. The chemical X is H2O (water). It is taken up by plants and comes out of the pores in leaves.
b. Earth. Our earth has the maximum abundance of H2O. 2/3 of the earth is covered by water.
c. blue. Water looks blue from outside the earth. Due to the abundance of water, the earth looks blue.
d. hydrogen. Combustion of hydrogen follows the reaction 2H2 + O2 = 2H2O. End product is water.
e. water. H2O is commonly known as water in English.

(a) Pores in the stomata
(b) Earth
(c) Blue
(d) Hydrogen
(e) Water
Water is released from the stomata in the leaves as water vapour through the process of transpiration. (a)
The Earth looks blue from space due to the huge presence of water. (b) & (c)
Hydrogen burns in air to form water. (d)

(a) don't know
(b) Earth
(c) blue
(d) Hydrogen
(e) Water

Carbon