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Large cities are more likely to find on a plain.
Explanation:
For a city to be established, geographical locations like vast plains, mountains, islands etc play a very important role. Cities are mostly established on the vast plains as compared to the other geographical locations.
Because of the facilities which the plains offer for the settling of the humans on that land like easy transportation leading to trade, setting up of businesses and growth. Taking up of agricultural activities also become easy in this plain land because use of equipment and machines become very easy.
Explanation:
The environmental theme refers to the natural surroundings, ecosystems, and resources of a particular place. It encompasses aspects such as climate, geography, flora, fauna, and other physical elements. The environmental theme focuses on understanding the impact of human activities on the environment and finding sustainable ways to coexist with it.
On the other hand, the interaction theme refers to the relationship between humans and their environment. It explores how individuals and societies interact with and are influenced by their surroundings. This theme delves into various aspects such as cultural practices, economic activities, technological advancements, and social behaviors shaped by the environment.
The environmental and interaction themes are inherently interconnected and interdependent. They are difficult to separate because human activities are influenced by the environmental conditions in which they occur, and, in turn, these activities can have significant impacts on the environment.
For example, human interactions with the environment, such as deforestation or industrial pollution, can lead to environmental degradation, loss of biodiversity, and climate change. Conversely, changes in the environment, such as extreme weather events or resource scarcity, can influence human behavior, forcing adaptations and changes in societal practices.
Therefore, understanding the environmental theme is crucial to comprehending the factors that shape human interactions, while understanding the interaction theme is essential for addressing and mitigating the environmental impact of human activities. Both themes are interconnected and must be considered together to achieve sustainable development and a harmonious relationship between humans and the environment.
Answer:
b. Bacteria photosynthesizing dissolved carbon dioxide in oceans
Explanation:
The levels of oxygen that we know nowadays in the atmosphere have not been like this in the more distant past. In order for the oxygen to start building up and change the composition of the atmosphere, something needed to happen, and that something was the cyanobaceteria. The cyanobacteria was able to perform photosynthesis, so it started to use the dissolved carbon for it, while in meantime it was releasing oxygen in the atmosphere. As the cynaobacteria was growing in numbers, over the course of millions of years, it managed to propel enough oxygen in the atmosphere so that the other organism can start developing, thus changing the world forever.
The earliest event enabling oxygen production in Earth's atmosphere was cyanobacteria, also known as blue-green algae, photosynthesizing dissolved carbon dioxide in oceans and releasing oxygen as a byproduct.
The earliest event that allowed for the production of oxygen in Earth's atmosphere was b. Bacteria photosynthesizing dissolved carbon dioxide in oceans.
During the first two billion years of Earth's existence, the atmosphere was anoxic - it lacked molecular oxygen. The only living organisms were anaerobic organisms, which can survive without oxygen. The process began to change with the appearance of phototrophs, autotrophic organisms which convert solar energy into chemical energy, and later cyanobacteria or blue-green algae evolved from these simple phototrophs.
Cyanobacteria began the oxygenation of the atmosphere by undertaking photosynthesis and releasing oxygen as a by-product. Their emergence and the resulting increase in atmospheric oxygen allowed for the development of more complex life forms, and the colonization of land, as the ozone layer (formed from oxygen) could absorb harmful ultraviolet light.
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Answer:
A geographer would collect a city's historical data about the census and the occurrences of natural disasters in order to study the impact of demographics and calamities on the geographical features of the region.
Explanation:
Magma forms at mid-ocean ridges through a process called seafloor spreading, which happens when tectonic plates diverge and upwelling currents in the mantle push up molten rock to fill the gap. In contrast, at convergent plate boundaries, magma forms through the subduction and melting of a tectonic plate as it is forced beneath another.
At mid-ocean ridges, tectonic plates move apart from each other, forming a rift. Here, upwelling currents in the mantle cause molten rock, or magma, to rise and fill the space between the separating plates, forming basaltic lava. This process, known as seafloor spreading, results in the creation of new sea floor and undersea mountain ranges.
Conversely, magma production at convergent plate boundaries or subduction zones is different. This occurs when tectonic plates collide, and one plate is forced beneath the other. The subducting plate is thrust into the high-pressure and high-temperature conditions of the upper mantle, causing it to melt and form magma. This magma can rise to Earth's surface, resulting in volcanic activity.
In summary, the creation of magma at mid-ocean ridges is caused by the divergence of tectonic plates and upwelling in the mantle, while at convergent plate boundaries, magma forms through subduction and melting of tectonic plates.
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