Approximately what proportion of north america is covered by forests?

Amountain created from tectonic activity would be considered which type of landform ? a) primary landform b) secondary landform

What was istanbul called before he ottomans conquered the city in the 15th century

Computer models can scientists predict weather. some computer models can show the predicted path of hurricanes. what other events could a computer model warn us of? a) undersea earthquakes , tornadoes, and avalanches b) tornadoes c) avalanches d) undersea earthquakes