What is the average temperature in temperate deciduous forests?

What is the border between layers a through f and layer g called?

In an effort to japan recover from the devastating effects of the 1929 depression, japanese military leaders in the 1930s formed an alliance with nazi germany negotiated more trade treaties with the soviet union closed its doors to western trade adopted a policy of imperialist expansion

Regions are always defined by a. climate b. many different factors c. mountain ranges d. continents & bodies of water