Pls help
I’ll brainlest I need help with 2 and 3

The formation of the planet uranus is estimated to have occurred approximately when?

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

The majority of australians live in the w. urban rimx. tropical northy. outbackz. sunshine coast