Answer:
i do not know Explanation:
Answer: pink-purple
Explanation: Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple.
I think the correct answer from the choices listed above is option D. Modern fishing practices threaten biodiversity mainly through the removal of community food supplies. When people remove a significant amount of fish, portions of the food web are disturbed and can affect a certain ecosystem.
The urban areas are more likely to have smog than the rural areas.
Urban area can be referred to as the town or city with advances an developments. Since the urban areas have more population density, more electronic items, vehicles and also industries, that is the reason why they are more likely to produce the smog or any other form of pollution.
Smog is a type of air pollution formed dye to the combination of smoke and fog. The most common source of smog is the burning of coal. This can be either due to industries or the fuels of vehicles. Fog can be of two types: Photochemical smog and industrial smog.
To know more about smog, here
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