Answer:
It forms a natural barrier between two very different geographic and cultural regions.
Explanation:
Answer:
Option: a. 200 million years ago
Explanation:
Million years ago, Earth had one supercontinent called Pangaea and surrounded by an ocean (Panthalassa). Alfred Wegener proposed the concept of one big continent after putting together different records of confirmation. He was able to give his theory by examining fossils of plants, trees, animals, and reptiles that found in different continents. About 200 million years ago, the supercontinent began to split up into two parts; Gondwana from Laurasia. Today's countries, including Africa, Antarctica, India, South America, and Australia are part of Gondwana, where Europe and North America from Laurasia.
The earths inner core is made of iron and nickle
Mindanao is the other main island of the Philippines. Borneo contains Indonesia, Malaysia and Brunei, Spratly is claimed by several South East Asian Countries and Irian Jaya is an island of Indonesia
Canadian shield is composed of Precambrian rocks that cover 2.8 million square miles.
