5. Read the article again. Check if the statements below are true (T) or false (F). Correct the false statements.
a Jane Goodall observed gorillas.
b Jane Goodall's study is the longest study of animals in the wild.
c Chimpanzees used twigs to catch ants.
d Tool use requires fingers.
e Octopuses use coconut shells to hide.
f Only humans use tools symbolically.

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