Ozone, a special form of oxygen that screens out harmful UV

[RonPurewal]

"big ron"? lol

[NicoleT643]

Hi Ron,
I have question about the 'it' of AE
It was mentioned in the previous post that it refers to the ozone. Thus, to say: "it appeared that it was immune" would be unnecessary.
Can't this it be the same function as : "IT APPEARS THAT the dinosaurs WERE smart." ?
Between D and E, why E is inferior thanD?
Thanks

[NicoleT643]

Hi Ron,
I have question about the 'it' of AE
It was mentioned in the previous post that it refers to the ozone. Thus, to say: "it appeared that it was immune" would be unnecessary.
Can't this it be the same function as : "IT APPEARS THAT the dinosaurs WERE smart." ?
Between D and E, why E is inferior thanD?
Thanks

Further reflection on my question, I think if the second it were to replace ozone, the sentence should be 'it appeared that the ozone was immune' in order to avoid ambiguity, am I correct?

[RonPurewal]

Hi Ron,
I have question about the 'it' of AE
It was mentioned in the previous post that it refers to the ozone. Thus, to say: "it appeared that it was immune" would be unnecessary.
Can't this it be the same function as : "IT APPEARS THAT the dinosaurs WERE smart." ?

even if you try to interpret the construction this way...

...it's still clearly inferior to the shorter version
...the mixing of 2 different tenses is nonsense ("has appeared" + "was immune").

A and E can both be eliminated for either of these reasons.

[NicoleT643]

Hi Ron,
I have question about the 'it' of AE
It was mentioned in the previous post that it refers to the ozone. Thus, to say: "it appeared that it was immune" would be unnecessary.
Can't this it be the same function as : "IT APPEARS THAT the dinosaurs WERE smart." ?

even if you try to interpret the construction this way...

...it's still clearly inferior to the shorter version
...the mixing of 2 different tenses is nonsense ("has appeared" + "was immune").

A and E can both be eliminated for either of these reasons.

Thanks for your explanation

[RonPurewal]

you're welcome.