What is the main thesis of thearticle? A. Vol
What is the main thesis of thearticle?
A. Volcanic eruptions are not alwaysdeadly.
B. Carbon dioxide emissions often giverise to global warming.
C. Older volcanic eruptions are moredestructive
D. It is not easy to calculate the killingpower of a volcanic eruption
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What is the situation about thedesertification
What is the situation about thedesertification in Africa? A The deserts are replaced withgrasslands B The deserts are expanding C the deserts are moving northwards D the deserts are being deserted
What is the root causeof desertification? A.
What is the root causeof desertification? A poor farming B overpopulation C radical climate change D disappearance of rare plant species
In order to prevent desertification the author
In order to prevent desertification,the author proposes A making good use of international aids B developing a sustainab
When did dinosaurs become extinct? A.300 mill
When did dinosaurs become extinct? A 300 million years ago B 250 million years ago C 65 million years ago D 60 million years ago
The Sahel zone is an area which A. is covered
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