Answer:
Diffusion is the movment of particles from an area of high concentration to a low concentration down a concentration gradient
Colloid- C)
Emulsion- A)
Heterogeneous- D)
Homogeneous- B)
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Answer:
Mammals, insects, fish and plants all have different systems of exchanging gas. For mammals we breathe into our lungs, for fish they use gills and insects use spiracles.
Explanation:
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Surface water changes into a gas and enters the atmosphere.
