Select the correct answer from each drop-down menu. Marcus is preparing a presentation about toxicity for a conference in his college. Help Marcus complete the sentence to define a type of toxicity.
An animal exposed to
toxins over a long period of time may be affected by
toxicity.
low levels of
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a variety of

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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."

It's Not As Bad As They Are Making It