Which type of air mass originates over northern Canada?

What is the fuel for a hurricane

What is that driving force of stars colliding?

What features of the organism are preserved in amber

What might happen if you completely removed a predator from an ecosystem?

If you are in downtown chicago and facing north what direction is lake michigan

Choose the state and capital that border the east coast of the United States.

Trees in deciduous forest do what? A. Shed leaves during one season B. Grow in a warm Mediterranean climate C. Have needlelike leaves D. Grow in a climate that is cold year round

How many miles long is the great wall of china

What landforms are created at convergent boundaries?

In which direction does the Sun appear to move across the sky? Ofrom west to east from east to west from north to south from south to north