Cover of the textbook Outcomes Elementary - Student's Book

The key answer of exercise 2

The key to exercise solutions in chapter Video 2 - Alex The Parrot for the textbook Outcomes Elementary - Student's Book with authors Hugh Dellar and Andrew Walkley from National Geographic Learning

Question

Watch the video about cognitive biologist Irene Pepperberg and the project and tests she does with a parrot called Alex. Which one of the sentences below best explains what the project shows?

Answer

4 - Parrots can show they understand size and colour.

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