What are invasive species? Why are they considered one of the greatest threats to an ecosystem?

The “twelve apostles” are in which national park?

Why slip off slopes are found on the inside of meanders? why river cliffs are found on the outside of meanders?

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