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Part 4
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Questions

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Questions 31-40

Complete the notes below.
Write ONE WORD ONLY for each answer.

Effects of urban environments on animals
Introduction
Recent urban developments represent massive environmental changes. It was previously thought that only a few animals were suitable for city life, e.g.  
the 31 – because of its general adaptability  
the pigeon – because walls of city buildings are similar to 32  
In fact, many urban animals are adapting with unusual 33  

Recent research
Emilie Snell-Rood studied small urbanised mammal specimens from museums in Minnesota.  
She found the size of their 34 had increased.  
She suggests this may be due to the need to locate new sources of 35 and to deal with new dangers.  
Catarina Miranda focused on the 36 of urban and rural blackbirds.  
She found urban birds were often braver, but were afraid of situations that were 37  
Jonathn Atwell studies how animals respond to urban environments.  
He found that some animals respond to 38 by producing lower levels of hormones.  
Sarah Partan’s team found urban squirrels use their 39 to help them communicate.  

Long-term possibilities
Species of animals may develop which are unique to cities. However, some changes may not be 40
Notes