How do i solve r+3-s if r=5 and s=6?

What is the difference between emigrate and immigrate? ?

Unlike other andean nations, chile has a relatively small population of mestizos people of european descent indians people of asian descent

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