Answer: The view of time would change from country to country. ... For example if there is only one time zone throughout the world then the time in America and India would be same (infact it would be same for all countries) but if it is 1 pm in India in the afternoon then 1pm in America would still be morning.
Explanation:
This would cause a lot of confusion
The movement of groups from one country,place, or locality to another
allows the soil to replenish the nutrients that each crop uses and a more nutrient soil will produce a larger crop yield.
i. Using fossil evidences
ii. Similar rock lithologies at the edges of continent
iii. Climate clues
iv. Fitting of the continents into a puzzle
v. Sea floor spreading
Explanation:
Pangea was a super-continent on the earth which formed about 330 million years ago during the Paleozoic and began breaking up during the early Mesozoic, about 175 million years ago.
Most of the present day continents formed as a result of the separation of the Pangea in the early Mesozoic.
The first scientist to propose the existence of this super-continent was Alfred Wegener in 1912. He suggested the continental drift hypothesis to explain the separation of the land masses.
Today, the theory has been revised to the theory of plate tectonics which provides a better mechanism to understand the drifting of the continents.
Here are some of the evidences to support the existence of Pangea;
- Using fossil evidences: Mesosaurus, a reptile animal that lived during the Permian, was found in both South America and Southern Africa. Since this animal could not swim nor fly, only a jointed landmass could have made them present in both continents.
- Similar rock lithologies at the edges of continents: rock formations at the Western edge of Africa and South - Eastern part of Brazil matches with one another and have been believed to be once joined together.
- Climatic clues such as glacial tills that are confined to temperate and polar regions have been found in tropical regions.
- Wegener fitted the present day continent into a giant supercontinent and this provided a visual support for his claim.
- Evidences from sea floor spreading revealing magnetic reversals at divergent margins suggests the prevalence of plate tectonics i.e moving plates on earth.
This among many other evidences underscores the existence of a supercontinent called Pangea.
Answer:
B. when they impact Earth.
Explanation:
- Asteroids are minor planet type rocky masses that are broken off and found in the inner solar system and also been called the inner planetoids as they are orbiting around the sun. They are similar to comets based on surface features.
- Computerized methods are used to find out the presence of asteroids in the shy. The asteroid belt has tended to evolve in the nebula formation of the sun with the presence of heavy metals sinking in the ice cores leaving the rocky mineral in the crust. They are almost 1000 km to 1 meter wide and can be large as miniature planets
- However waste the majority of them are irregular in the shade the three largest asteroids are Ceres, Vesta, and Pallas that form a type of the dwarf planet.
