Question 11 of 15 Which feature of a balanced chemical equation demonstrates the law of
conservation of mass?
A. It has equal numbers of each type of atom in its reactants and
products,
O B. It has a reaction arrow between the products and reactants of a
chemical reaction.
C. It shows the chemical formula for each substance in its reactants
and products
D. It shows the coefficients and subscripts of each formula shown in
the equation

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.