most of the freely movable joints of the body could be classified both structurally and functionally as .

answer:

y for points : )

explanation:

having the certification could make the person more required to do a certain thing then another.this could also lead to different job offers or opportunities.

answer:

i don't believe the ocean is purple, but it might once have been:

as for the sky, according to nasa:

"sunlight reaches earth's atmosphere and is scattered in all directions by all the gases and particles in the air. blue light is scattered more than the other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time."