Examlex
If every U.S.household used just one 500-sheet roll of toilet paper made from 100% recycled paper in place of a roll made from virgin timber, 425,000 trees would be saved each year.
Conjunction
A compound statement formed by combining two statements with the word "and".
Tautology
A statement that is inherently true in every possible interpretation due to its logical structure.
Biconditional
A logical statement in which both parts are mutually dependent: if one is true, the other must be true, and vice versa.
Self-Contradiction
A statement that inherently contradicts itself, asserting and denying the same thing, thereby being false in all situations.
Q2: The exurbs are people who used to
Q13: Air pollution is a recent phenomenon, which
Q19: Bottled water in the U.S.costs 240 to
Q51: Recreation, hunting, and fishing in national forests
Q70: Some large cities surround themselves with a
Q71: Some chemicals released to the environment are
Q82: Which of the following is not a
Q92: We tend to be far more frightened
Q92: Some scientists and economists doubt that much
Q93: More than half of all commercial buildings