Which is a cause of shin splints? Friction between a body part and clothing
Exercising on hard surfaces
Insufficient water intake
Poor breathing technique

answer:

thousands of years before the arrival of the british, australia was settled by the indigenous people of australia called the aborigines. this timeline begins when the europeans first arrived. 1606 - the first european to land at australia is dutch explorer captain willem janszoon.

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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."