Select the correct answer. What is true about the nodes and antinodes of a standing wave?
O A. They decrease in number with time.
OB. They remain in a fixed position.
O C.
Their position keeps changing with time.
OD. They increase in number with time.

B) They remain in a fixed position.

Explanation:

They remain in a fixed position. The amplitude of the resultant wave is greater than the amplitude of either of the two individual waves.

this is a good question! i'll do some research and come back when i have the answer!

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.