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.
Answer:
Particularly distinctive of the climate are sclerophyll shrublands, called maquis in the Mediterranean Basin, chaparral in California, matorral in Chile, fynbos in South Africa, and mallee and kwongan shrublands in Australia
Explanation:
Answer:
B. The inner core
Explanation:
The inner core is the innermost layer of our planet. It is so dense because it is under the pressure of all the other layers. It releases radiogenic heat into the outer core, which then passes it into the mantle, where it creates convection currents. Convection currents are responsible for tectonic plate movement and seafloor spreading, and therefore, the movement of continents over time.
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