Refraction is
O when light bounces off a hard surface
O when waves are bent as they enter a new medium
O an area of spread out molecules in a longitudinal wave

Refraction is : when waves are bent as they enter a new medium

Explanation:

Refraction of light is a process of bending of light when its moves from one medium to another. The speed of light in medium is no same. When the ray moves from denser to rarer medium, it will bend away from the normal and if the ray moves from rarer to denser medium, it will bend towards the normal. Hence, the correct option is (b).

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong

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.