What challenges face bohemia and moravia?

They are heavily polluted areas thats needed to modernize their industries and clean up the quality of the air and water.

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).

Answer (d) the greenhouse effect is primarily caused by car and trucks;