Answer to Dictation 1
Something under frozen ground that contains many deadly diseases.
Go to Dictation 2
Answer to Dictation 2
Ancient microbes have been trapped for millennia in the permafrost.
Go to Dictation 3
Answer to Dictation 3
It is common high in mountains and near the North and South Poles.
Go to Dictation 4
Answer to Dictation 4
The result could be the release of unknown and harmful viruses.
Go to Dictation 5
Answer to Dictation 5
We know little about Factor X and the biological dangers.
Go to Dictation 6
Answer to Dictation 6
There are viruses deep in the permafrost that are more than 50,000 years old.
Go to Dictation 7
Answer to Dictation 7
Ancient viruses up to a million years old would be the most terrifying.
Go to Dictation 8
Answer to Dictation 8
They are unknown and we have never encountered them before.
Go to Dictation 9
Answer to Dictation 9
A bigger danger from melting permafrost is the release of methane.
Go to Dictation 10
Answer to Dictation 10
This is a greenhouse gas that is 80 times more harmful than CO2.
See the Factor X lesson for the whole text.
Go to the BIG dictation
