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Practice Reading: Fill in The Blanks (Drag & Drop)
ID: #38836
Earth
Instructions
In the text below some words are missing. Drag words from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.
* Drag the correct answer into all target fields
Fortunately for life on Earth, the Sun's production of heat is remarkably consistent But scientists are aware that even a small change would have grave consequences for the future, triggering either a new ice age, or runaway global warming. There is that this has happened before. In 17th century England, for example, the River Thames in London was regularly over. Scientists now think that fluctuations in the Sun's temperature caused a 'Little Ice Age' at that time. Indeed, the latest theory is that the processes going on in the centre of the Sun are inherently . If the experts are right, there could be many changes m the Sun's brightness this century and the is that the temperature here on Earth will get hotter and hotter.
steadily
exchanging
evidence
unstable
likelihood
wrapped
marker
frozen
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