Many penguins die in Antarctica. They are Adélie penguins. A team looks at the dead birds. They find a sickness. The sickness is avian cholera. It is not H5N1. H5N1 is a different sickness. The team knows the true cause now. The team tests the birds. They find bacteria. Bacteria are tiny things. The bacteria make the birds sick.
The sickness comes from birds. The sickness is from bacteria. The bacteria kill many penguins. The study shows this fact. The study is in a science book. The book is for scientists. The study says this sickness is a big problem. The problem is not well known. The problem is a threat for birds. It is also a threat for seals.
People must watch the animals. People must find the sickness fast. People must stop the sickness. This helps the animals live. The team says more study is needed. People need to look at other sicknesses. This helps to protect the animals. The sickness is a new danger in Antarctica.
Sources: phys.org
The words in bold are from the article.
| 1. die | a. destroy |
| 2. sick | b. halt |
| 3. team | c. danger |
| 4. look | d. germs |
| 5. find | e. group |
| 6. bacteria | f. ill |
| 7. kill | g. perish |
| 8. problem | h. issue |
| 9. threat | i. discover |
| 10. stop | j. examine |
1.g 2.f 3.e 4.j 5.i 6.d 7.a 8.h 9.c 10.b