On a topographic map, a region that had very widely spaced contour lines surrounded by very narrowly spaced contour lines is best described as... a. a deep canyon
b. a beach
c. a mountain top
d. a valley

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