Just saw an update in the drill tags.
Is there a way to revert back to the old order of the drill tags?
I really liked how in the old version, the question types were separate from the other tags. This one is harder to see, navigate, and select by question type.



The way I broke down A "The amphibian species whose population declines have been attributed by many scientists to industrial pollution are not known to be among those species whose populations do not vary greatly as a result of natural variations in the weather" is as follows:
The amphibian species ... (whose population declines have been attributed by many scientists to industrial pollution) are not known to be among those species (whose populations do not vary greatly as a result of natural variations in the weather).
1st Parentheses (whose population declines have been attributed by many scientists to industrial pollution)) is about the "certain species" stimulus discuses.
2nd Parentheses (whose populations do not vary greatly as a result of natural variations in the weather) is about the group that is not part of the "most amphibian species' populations vary greatly from year to year because of natural variations in the weather". So, the group of the 2nd Parentheses is part of the "Not Most" group or the "0-50" group, when taking the "most" group to be "51-100".
So putting it all in but condensing it:
The amphibian species of certain species are not known to be among those species in the not most group.
In other words, the certain species ARE part of the most group (because of the double negatives that cancel out).
And exactly that's the assumption the argument makes. The argument assumes that the "certain species" is part of the "most amphibian species populations" group.