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That water has a very high specific heat means that, without a large temperature change, water can add or lose a large number of heat.
Why were commas used? (in ", without a large temperature change,")
I think they can be ommited, can they? if not, why?
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Also here:

"Prior to an extermination program early in the last century, live wolves roamed across nearly all of North America"

And here:
"Shortly before the Allied invasion of Normandy, Ernest Hemingway has gone to London as a war correspondant for Collier's.

Also here Emotion: big smile :
During the 1960s, the Berkley campus of the University of California came to national attention as a result of its radical political activity.
Also here please: "Running toward third base, he suddenly realized how stupid he looked."

By the way, I have a relative question about this specific sentence. How is "Running toward third base" connected to the rest of the sentence? There seems to be no connectors.

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Hi,
That water has a very high specific heat means that, without a large temperature change, water can add or lose a large number amount of heat.
Why were commas used? (in ", without a large temperature change,")
To show the reader that the writer intends that part to be a parenthetical comment. Particularly as a senetnce gets longer, commas help the reader to easily identify and understand the different parts of the sentence.

I think they can be ommited, can they? Yes if not, why?

(I don't really understand what this sentence means.)
Clive
Hi,
Also here:

"Prior to an extermination program early in the last century, live wolves roamed across nearly all of North America"

And here:
"Shortly before the Allied invasion of Normandy, Ernest Hemingway had has gone to London as a war correspondant for Collier's.

Also here Emotion: big smile :
During the 1960s, the Berkley campus of the University of California came to national attention as a result of its radical political activity.

As I said before, commas help the reader to understand the structure of the sentence. Most native speakers would naturally pause at those places in saying those sentences.

Clive
Hi,

Also here please: "Running toward third base, he suddenly realized how stupid he looked."
Same comment as before.

By the way, I have a relative question about this specific sentence. How is "Running toward third base" connected to the rest of the sentence? There seems to be no connectors. It's a standard English construction. You could think of it as a shortened form of 'While he was running towards . . . '

Clive
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Yes it should be "amount" instead of "number". This was a question about correcting the wrong word. I've put incorrect form.

"heat" and "temperature" are different in physics. I don't know what it exactly means, but it depends on what the terms exactly mean in physics.

How about the other sentences? And most importantly the last question.
EDIT: OK, you answered them, I can't be happier Emotion: smile

Thank you very much indeed.

I don't understand what this sentence mean!