What major geologic mass extinction is associated with the Siberian Flood Basalts?

Which of the following scenarios is an example of a trade sanction

Which of the following scenarios is an example of a trade sanction

Rectangle qrst is shown. angle qrt is congruent to angle str, and angle str is complementary to angle qtr. which statement is true about angles qrt and qtr? they are congruent. they are complementary. they are supplementary. they are right angle