66.
The ideal conditions for coral growth are:
I. water temperature around 20°C
II. tropical waters (between 30°N and 30°S)
III. highly saline water
IV. adequate oxygen

67.
Which of the following current is responsible for rise in temperature in westen Europe?

68.
What is the correct decreasing order of the share of different salts in sea water?

69.
Which one of the following European countries borders Atlantic Ocean?

70.
The Lena river passes through which country?

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