Which of the following kinds of environmental problems is irreversible? a. water pollution b. extremely high atmospheric carbon dioxide levels c. polar ice pack melting d. species extinction

Match the following items. 1 1 (4,4) 2. (-4,-2) 3. (3.-6) 4. (-4, 6) 5. (1,5)

The middle east links which two continents? ●asia and europe●europ and africa●africa and asia●africa and australia

What statement about charlemagne is not true? a. charlemagne's empire collapsed during his rule b. charlemagne sent missionaries throughout europe c. charlemagne encouraged the arts and education d. charlemagne ruled much of western europe a. charlemagne's empire collapsed during his rule