, the world was made up of a single continent through most of geologic
time. That continent eventually separated and drifted apart, forming
into the seven continents we have today. The first comprehensive theory
of continental drift was suggested by the German meteorologist Alfred Wegener
in 1912. The hypothesis asserts that the continents consist of lighter
rocks that rest on heavier crustal material—similar to the manner in
which icebergs float on water. Wegener contended that the relative
positions of the continents are not rigidly fixed but are slowly
moving—at a rate of about one yard per century.
Answer:
Forests is one of the most important resources for the human beings. we depend upon forest to survive,from the air we breathe to the wood we use is is from forests. beside providing habitats for animals and livelihoods for human, forest also prevents us from different kind of disasters such as landslide, soil erosion etc
The difference between alberta and vancouver is 690 kilometers
Tropical. In this hot and humid zone, the average temperatures are greater than 64°F (18°C) year-round and there is more than 59 inches of precipitation each year.
Dry. These climate zones are so dry because moisture is rapidly evaporated from the air and there is very little precipitation.
Temperate. In this zone, there are typically warm and humid summers with thunderstorms and mild winters.
Continental. These regions have warm to cool summers and very cold winters. In the winter, this zone can experience snowstorms, strong winds, and very cold temperatures—sometimes falling below -22°F (-30°C)!
Polar. In the polar climate zones, it’s extremely cold. Even in summer, the temperatures here never go higher than 50°F (10°C)!
