In a causation study which of the following should be dominated or kept constant? Controlled variable
Independent variable
All variables

all variables

Explanation:

i took the test

answer:

tell em hunny

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."