Which factor accounts for the distribution of a tundra biome in the United States/Canada region? A combination of low temperatures and low precipitation

A limited population of large wild game and other animals

A subsurface layer of soil that remains frozen throughout the year

A stream of cooled surface winds passing over mountainous terrain

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

Select the correct answer.look at this nineteenth-century illustration of london. which explanation best relates this illustration to changes in britain in the 1800s? a.factory workers in cities lost their livelihood because of the lack of housingb.industrialization narrowed the inccome gap between landowners and workers.c.the migration of workers from rural to urban areas resulted in overcrowded citiesd.the spread of railways allowed farmers to sell produce far from where it was grown.

Why are there restrictions to traveling to cuba?