Gap Fill - Dog Years - Level 4


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   age      arithmetic      changes      formula      lovers      method      method      multiplying      practice      way  

Paragraph 1

Dog have been using the wrong to calculate their pet's . Researchers say the of finding a dog's age in human years by by seven is incorrect. They have come up with a new that precisely finds out a dog's age. The new needs more than simple mental . It compares the of the DNA of dogs and humans. Scientists say DNA analysis is the best to measure the ageing speed of dogs.

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