In the following questions, choose the correct word(s) that completes the corresponding space in the paragraph below.

Siberian tigers live in northern China and Korea as well as in Siberia. During the long winters of the Arctic climates, their striped yellow coats get a little lighter. __1__ (This/This change in color) allows the tigers to blend in with the snow-covered landscape. __2__ (These/These coats) also grow quite thick, allowing the tigers to withstand temperatures as low as -50¡ F. __3__ (Some/Some Siberian tigers) have to travel great distances to find food.