The effects of environmental change on birds 讲座
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Question 1
正确答案:
insects
but what wasn't know until quite recently is that those that eat insects can also be affected.
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Question 2
正确答案:
behaviour|behavior
And these may be to do with the behaviour of the birds.
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Question 3
正确答案:
father
and what you may not know is that a young bird seems to acquire this skill by listening to the songs produced by its father,
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Question 4
正确答案:
complex|complicated
then the songs the produce aren't as complex as those produced by other birds.
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Question 5
正确答案:
reproduction|breeding
and so it can affect their chances of reproduction.
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Question 6
正确答案:
control
so the experimenter has a much higher level of control,
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Question 7
正确答案:
ducks
For example, it's been found that ducks who'd been feeding at a contaminated site were later shot by hunters over a thousand kilometres away,
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Question 8
正确答案:
language
mercury causes developmental delays in the acquisition of language,
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Question 9
正确答案:
food
It's now known that an unborn child can be affected if the food eaten by its mother contains high levels of mercury,
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Question 10
正确答案:
cost(s)|price(s)|bill(s)
and increase costs for everyone.