<span>Most of the charged particles from the sun are deflected around earth by the Earth's magnetic field.
Inside the Earth lies molten core. High percentage of the core is iron. This iron rotates around the center and create magnetic field. This field extends out of the Earth into the space. It surrounds Earth and protects it from the charged particles. Those particles are diverted to the magnetic poles and they create lights in the atmosphere by reacting with gases in atmosphere. On the north magnetic pole we can see northern lights (aurora borealis) and on the south magnetic pole we can see south lights (aurora australis).</span>
Answer: A. The soil in the floodplain is usually fertile
Explanation:
A floodplain can be defined as the flat area which is expected to receive the heavy flow of water due to neighboring water body, which may cause flood. Such floodplains have been proved to be the sites of agriculture since decades due to the rich and fertile soil. As the river or any other water body brings sediments which include essential minerals supporting the growth of the crops. This will solve the problems of daily food needs for the people being settled at the neighboring places.
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.
