What are the ways businesses or industries contribute to the contamination of water?

 In urban areas, sources of diffuse water pollution include: pollutants from car parks and transport, such as oil and brake fluid, rubber and metal from tyres and brakes, exhaust emissions, and detergents and grease from vehicle cleaning. heavy metals and pollution washed from roofs.

Explanation:

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the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.