Poisoning the land - pytania i odpowiedzi

How can soil be renewed?

trzeba to skrócić

What are the 3 biggest sources of pollution in agriculture?

The 3 biggest sources of pollution are pesticides, fertilizers and clearing vast areas for farming.

How is soil destroyed mechanically?

Soil can be destroyed mechanically by bulldozers which dig up soil and vegetation.

What heavy metals contaminate soil in mining areas?

In mining areas soil is contaminated by three heavy metals such as lead, zinc and manganese.

How can landfills pollute soil and be dangerous for people?

Landfills can pollute soil and be dangerous for people because not all poisonous wastes are buried. Some of poisonous wastes can leak from their containers into the soil.

How can we degrade oil?

Thanks to new kinds of bacteria (if scientists develop them).

How can beaches be polluted?

Beaches can be polluted by domestic and industrial wastes such as empty milk cartons, bottles or plastic bags, by wastes from hospital such as syringes and blood samples (and by oil split).

What are dioxin?

Dioxins are produced when plastic and other products made from chlorine are burnt.

What is lead dangerous for humans?

Lead can cause damage to the brain and nervous system.

What chemical compounds are formed in the atmosphere?

In the atmosphere are formed two chemical compounds. It is sulphuric acid and nitric acid. Sulphuric acid and nitric acid are formed in the atmosphere.

When can radioactive substances pose a threat to humans?

Radioactive substances pose a threat to humans when they are in high level.

How can waste be reduced?

Wastes can be reduced if we recycle them and learn to depend on less hazardous forms of energy.