Question

give correct answer to the question! ​

Answer 1

  Answer

•  The man-made wrongful process of harmful chemical
• substances and heavy metals getting mixed in big river bodies (lakes, rivers,
• canals and seas) and then move into the food chains of the ecosystems is called
• biological magnification. The result is that they get into the diet of aquatic
• organisms. Then these get into the bodies of higher level predators in the food chain.

• The increase in toxic materials in the organisms higher up in the food chain,
• due to their presence in the organisms in the lower levels is called biological magnification.

• Because of mixing of toxic chemical substances in water and Earth, the animals,
• birds, fish and humans who feed on these get infected. Their bodies build gradually materials harmful to their own health.

• Reduce the effect of biomagnification or biological magnification by

1.

• preventing oily wastes from cooking, oil, grease, chemicals, dyes, wasted
• pills, medications, used sanitary napkins, cleaning agents, pesticides,
• herbicides, fertilizers  into the sewerage or drainage through sink in the kitchen or flushing through toilets.

2.

• Dispose of the garbage properly through the municipal disposal system.

3.

• Organic farming reduces the use of pesticides, herbicides and fertilizers.

Answer 2

Answer:

A precipitation reaction refers to the formation of an insoluble salt when two solutions containing soluble salts are combined. The insoluble salt that falls out of solution is known as the precipitate, hence the reaction's name.