The answer is Radon. Radon is an odorless, colorless and tasteless gas. It is the heaviest among the noble gases. It is, in fact, radioactive. Radon is considered to be a health hazard. It is so radioactive that further studies become very difficult. When radon decays, radon progeny is produced. These new substances stick to the surfaces of dust particles in air. When inhaled may stick to the lung and airway walls.
Answer:
Geographers spend time comparing conditions in different places and regions of the world in order to compare or differentiate landforms, climates, economies, people and cultures and maybe even resources.
Explanation:
For instance, if you know that all the countries in the different continents were combined as a super continent before continental drift came into being, you would realise that certain countries in South America may have particular features or something similar to those of Australia or any other country. In can either be through the finding of fossils, landforms, etc.
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Scientific ocean exploration began in the 19th century, using wooden sailing ships. At that time, explorers had none of the technological sophistication and tools available today. A comparison of modern-day exploration with the late 19-century journey of the HMS Challenger<span>illustrates the progress that science has made in ocean exploration.</span>
The type of plate boundary referred here is defined as an ocean-Continent Convergent Plate Boundary.
<h3>What is an ocean-continent convergent plate boundary?</h3>
An ocean-continent convergent boundary is a limit in which the oceanic plate is forced underneath the continental plate.
This type of boundary occurs when an oceanic lithospheric plate crashes against to a continental plate.
In conclusion, the type of plate boundary here is defined as an ocean-Continent Convergent Plate Boundary.
Learn more about Convergent Plate Boundaries here:
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In anthropology and geography, a culture region, culture sphere, culture area or culture area refers to a geographical area with one relatively homogeneous human activity or complex of activity (Culture). Answer A is the most likely answer.
