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They are in danger from stronger winds and humidity, higher temperatures and bigger floods due to climate change as it is destroying the stonework.
They may be gradually destroyed as the stones crack due to hot weather and winds erode the structure, leading to the stones crumbling and disappearing into dust

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In recent years, the great pyramids and the Great Sphinx have been threatened by rising water levels and hotter climates that are both caused by climate change. This has threatened its existence because the rising groundwater may submerge parts of it which are not waterproof or can be easily damaged by water. This also threatens the pyramid through hot weather because the pyramid may crack due to it.

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The Great Pyramid of Giza is the only wonder of the ancient world that has survived to the present day, and it is the world's tallest human-made structure for nearly 4,000 years. However, in recent years, rising groundwater levels due to water infiltration from the suburbs, irrigation canals, and mass urbanization encircling the Giza plateau have posed a threat to the Great Pyramids and the Great Sphinx in recent years. The Egyptian Heritage of the Giza Pyramids Plateau (GPP) is threatened by rising groundwater levels, especially since the area surrounding the plateau has been converted into a suburb of Greater Cairo.

Source:

https://heritagesciencejournal.springeropen.com/articles/10.1186/s40494-020-0356-9

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Air pollution can erode the limestone and sandstone blocks that make up many ancient structures, and the construction of housing areas without proper sewage systems, in areas near historic sites, can cause tremendous damage.

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What's the most sus ability?

SUS-tain-ability (i hate it here)

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209_Pyramids of Giza_Photos and Write-Ups

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There is a English plan to build a tunnel near Stonehenge. A tunnel through the local chalk could cause the water table to drop. At a precious site like Blick Mead, he says, it would mean bones and other organic remains could quickly dry out, and could be lost forever.

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The Great Barrier Reef is the one of the world’s largest living structures that is home to around 1300 species. However, due to climate change, unprecedented marine heatwaves have caused three mass coral bleaching events that reduced shallow coral reefs by as much as 50% over five years. This threatens the existence and survivals of several marine species that depend on the Great Barrier Reef for survival, such as Manta Rays, Whale Sharks, Green turtles, etc. This surely must be wake up call for us to protect the Great Barrier Reef before it is completely destroyed by climate change by doing our part to stop pollution, over-fishing, and taking steps to counter climate change.

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Our class has chosen to create pyramids with recycled materials.

The pyramids of Egypt are one of the most beautiful and close to perfect wonders of the ancient world. Even with no technology to deal with heavy limestone and materials for the building of these tombs, the ancient Egyptians have mastered the art of architecture, creating remarkable structures, such as the Great Pyramid of Khufu , the largest of the Great Pyramids of Giza. If one divides the perimeter of the pyramid by its height, the value obtained is equal to dividing the circumference of the circle by its radius: 2 multiplied by π. This mathematical marvel is truly one of its kind and deserves to be preserved for the education of the future generations so that it carries on the many stories that were passed down to us.

However, these pyramids are critically threatened by climate change. These structures were built to endure the conditions of its locations, not the climate issues our irresponsibility has brought upon us and the world. The ancient stonework is facing cracks in the facades of the graves and the colour of the archaeological stones are fading. Extremely high temperatures and floods are also threatening the very core of the marvellous, long-standing structures that are a key part of the world’s cultural identity and will be for years to come. The deterioration of these monuments may lead to them becoming lost to the world, forever. No longer belonging to us, and no longer belonging to our future generations.

It is up to us, as citizens of the world, to take fruitful action to safeguard these wonders that have, for so long, made our collective identity as global citizens, so unique. Let us all play our part to ensure that these mathematical marvels are preserved for us, for our children and for many generations to come, so that they may continue to uphold the basis for our diversity and what makes us special.

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by Joshuanne, Tiffanie, Zishan, Hannah. Serafina also helped B)

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In recent years, the Pyramid Of Giza has been threatened by the different enviromental issues. In order to promote sustainability, we used unwanted construnction paper, sticks, rope, cardboard, bag and magazine to create the pyramid. It was pasted onto a paper bag, which serves as a base. Here is our take on the Pyramid of Giza :)

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The layered styrofoam shows the different layers and cliffs in the reef. There are remnants of human activity, such as the medical equipment, string and ship parts. We can see that there is an octopus in the cave looking dejected and sad. This shows the effects of pollution, and how they may harm our marine life.

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204 has chosen the Great Wall of China, being one of the new Seven Wonders of The World.

The Great Wall of China, or Wanli Changcheng in Mandarin, was built over many centuries by the emperors of China to protect their territory from invaders.

Though it is a major tourist attraction known worldwide, it is facing environmental threats due to climate change. Natural factors such as high temperatures and solar radiation, (acid) rain, typhoons and hurricanes, mudslides and earthquakes cause considerable damage to the Great Wall, which have only been exacerbated by climate change.

Our class hopes that with the conservative measures taken by the Chinese government and other forces, they can combat climate change, and the Great Wall of China will withstand the test of time.

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Because of climate change, the rocks would die because of an increased natural disasters. Hence, we need to protect them for the culture, heritage and history that the previous generations have preserved!

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The colosseum is made of recycled paper and cardboard. We chose the colosseum because it

looks cool :) We made a small version so it is mono detuiled and so that we can use less

materials. The desgn is intriguing so we made a detailed version because size matters and its unique!

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Our creation depicts one of the many wonders of our world: the Great Barrier Reef! Located off the coast of Australia, the Great Barrier Reef is a frequent tourist attraction with its bright colours, caused by none other than coral reefs, and its beautiful marine diversity. Yet, unbeknownst to many, global warming has led to this wondrous place to lose half of its corals since 1995, especially due to the rising temperatures which cause corals to die. Relating back to our creation, the pieces of crumpled newspaper depict the disaster of the Great Barrier Reef, while the hand drawn clams and fishes represent the diverse underwater kingdom. We also added drawings of plastic bags to show that this wonder is endangered and we have to do something to stop it.

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As our economy continues to grow, the human activities gradually increases, which causes the increase in industrial activities. This means that there will be an increase in the carbon emission. Hence, the rain will be more acidic, which is harmful to the Great Wall as it means that there is a faster rate of weathering of materials that make up Great Wall. Therefore, there is a need for us to protect the Great Wall as it is part of the 7 Wonders of the World. We should keep the heritage and conserve the efforts of those who sacrificed their lives just to build the Great Wall of China.