11.   If the temperature of the air is very, very cold, salt is not effective in melting ice.

12.   In particular, why is the temperature of the microwave background radiation so nearly the same when we look in different directions?

13.   It should show frost when outside temperatures are below freezing.

14.   It was sunny, but the temperature was well below zero.

15.   Midday temperatures can be high and the major causes of chick mortality are sunstroke and overheating.

16.   Rising global temperatures are a cause for serious concern.

17.   Temperatures were in the high seventies and with the absence of any wind it felt sticky and humid.

18.   Temperatures were so low most plants could not survive.

19.   Temperatures were still in the high nineties.