Why is the oceanic crust different than the mantle?

Largest delta in the world. kidhar hai market mein india

What is found within a ranger tower overlooking a drained lake

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