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Level A1 – BeginnerCEFR A1
2 min
73 words
- Chimpanzees live in Kibale National Park, Uganda.
- A large group later split into two groups.
- One group attacked and killed many former friends.
- The attacks began after rising aggression between subgroups.
- The group split into two parts.
- The groups then stopped meeting and breeding.
- Researchers have followed them for many years.
- Scientists were surprised by violence among former allies.
- Long-term study helped show the change.
- The study raises questions about social behaviour.
Difficult words
- chimpanzee — a large wild ape that lives in AfricaChimpanzees
- split — to divide into two or more parts
- attack — to hurt or try to harm someone or somethingattacked, attacks
- aggression — angry or violent behaviour toward other animals or people
- breed — to produce young animals or have babiesbreeding
- researcher — a person who studies animals or groupsResearchers
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Have you ever visited a national park?
- Do you think animals can be friends?
- Would you like to watch animals for many years?
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