Why are canada's climates generally colder than those of the united states

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe

The action of eventually a low island to form. a. wind b. waves c. volcanoes d. tectonic plates