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

What are canada’s major boundaries?

Which of these is the sound of fish slapping against human flesh?

Venezuela’s economy relies most heavily on which of the followingvenezuela’s economy relies most heavily on which of the following? a. oil reserves in places such as the eastern llanos b. cattle ranching in the grasslands c. fertile farmland in the andean highlands d. coffee plantations in mountainous areas