What is one way in which the spread of the roman empire influences future in europe

Which of the following statements about wearher along mountain ranges is correct

Which ecosystem best fits the characteristics listed below? which ecosystem best fits the characteristics listed below? ii. seasonal migrations of millions of wildebeests, zebras, and elephants iii. large numbers of predators, such as lions iv. acacia trees and grasses a. the congo rainforest b. the african mangroves c. the serengeti grasslands d. the sahel

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