 
 <prompt> text: ```For South America, the rich soil of the Amazon River basin for Brazil dey known as "black gold". Scientists find out say the secret of this rich soil na charcoal. Local people bin dey make am from animal bones and tree branches. Dem mix the charcoal with the soil about 1,500 years ago.

Now, scientists for the United States don do modern demonstration. Dem talk say charcoal fertilization dey offer one revolutionary way to improve soil quality for hundreds or even thousands of years.

Mingxin Guo and im team for Delavare State University heat tree leaves, corn stalks, small pieces of wood and poultry waste into "biochar". Dem report their findings for one recent meeting of the American Chemical Society for New Orleans.

Biochar fit be good news for farmers wey get poor soil and hungry populations to feed. Professor Guo talk say e fit even help against global warming. Intensive farming and overuse of chemical fertilizer dey release carbon dioxide into the atmosphere. Biochar dey do the opposite, e say. E dey trap carbon for the ground.

The researchers plant winter wheat for containers of soil for one greenhouse -- some with biochar, some without. Professor Guo talk say the wheat dey grow better well well for the pots with biochar. The soil add two percent charcoal to am. But e talk say even one percent treatment go increase productivity.

The results show say biochar fit increase organic matter for soil. Loss of nutrients for soil dey increase worldwide as farmers dey try to grow more food for growing populations.

Next, the team go carry out one five-year study of biochar with spinach, green peppers and tomatoes.

Mingxin Guo talk say e learn about the "black gold" for Brazil from one magazine story. E explain say dem discover am for the jungle, for the area where waters dey flow go the Amazon, for the 1960's. But e no be until recent years before scientists begin bring public attention to am.

Answer this series of questions:

1. Where the Amazon River basin dey located?
2. Wetin be the kind of soil wey dey there?
3. Wetin the rich soil still dey known as?
4. Who make the soil the way e be?
5. Using wetin?
6. When dem do am?
7. Wetin be the country wey dey do modern demonstrations of this method?
8. Who be the scientist wey dey head this project?
9. E dey work alone?
10. Wetin be the school wey e dey work for?
11. How e take learn about black gold?
12. Where black gold dey discovered?
13. When?``` <response>: ```1. Brazil
2. di secret of dis rich soil na charcoal
3. black gold
4. Local people
5. animal bones and tree branches
6. 1.500 years ago
7. United States
8. Mingxin Guo
9. Mingxin Guo and im team for Delavare State University
10. Delavare State University
11. heat tree leaves, corn stalks, small pieces of wood and poultry waste into "biochar"
12. Amazon River basin for Brazil
13. for di 1960's``` 