coordinating conjunctions

[beingAndNothing]

Coordinating conjunctions (and, for, or, but, nor, yet, so) join two independent clauses.
Is it okay to omit the subject in the second clause?

Take a look at this sentence.

The category 1 to 5 rating known as the Saffir-Simpson Hurricane Scale provides an estimate of a hurricane’s potential to destroy or damage property, and is primarily determined by wind speed.

The subject in the second clause has been omitted.

thanks.

[Stuart@KaplanGMAT]

It's perfectly OK to omit the subject in the second half.

Consider a much simpler sentence:

Bob is a graduate of Harvard and works at Microsoft.

We don't need to repeat "Bob" in the second half of the sentece. Your example is more complicated, but he same rule applies.