Answer:
A global catastrophic risk is a hypothetical future event which could damage human well-being on a global scale,[2] even endangering or destroying modern civilization.[3] An event that could cause human extinction or permanently and drastically curtail humanity's potential is known as an existential risk.[4]
Artist's impression of a major asteroid impact. An asteroid with an impact strength of a billion atomic bombs may have caused the extinction of the dinosaurs.[1]
Potential global catastrophic risks include anthropogenic risks, caused by humans (technology, governance, climate change), and non-anthropogenic or external risks.[3] Examples of technology risks are hostile artificial intelligence and destructive biotechnology or nanotechnology. Insufficient or malign global governance creates risks in the social and political domain, such as a global war, including nuclear holocaust, bioterrorism using genetically modified organisms, cyberterrorism destroying critical infrastructure like the electrical grid; or the failure to manage a natural pandemic. Problems and risks in the domain of earth system governance include global warming, environmental degradation, including extinction of species, famine as a result of non-equitable resource distribution, human overpopulation, crop failures and non-sustainable agriculture.
Examples of non-anthropogenic risks are an asteroid impact event, a supervolcanic eruption, a lethal gamma-ray burst, a geomagnetic storm destroying electronic equipment, natural long-term climate change, hostile extraterrestrial life, or the predictable Sun transforming into a red giant star engulfing the Earth.
All of the mentioned people are a part of ancient Greece
Leonidas- He was the king of Sparta, a city located in ancient Greece
Philip of Macedon- He was the king of Macedon (ancient Greece) who has its origin from the Argead dynasty
Alexander the Great- Also known as Alexander III he is a popular king known for his conquests around the world.
Cleisthenes- He is a Greek lawmaker who is known for creating the constitution of ancient Greece
Solon- A Greek lawmaker who is known for laying the foundation stone for Greek democracy
Demosthenes- An orator from ancient Greece. He is also known for his statesmanship
Answer:
It was the ancient Greeks who first developed the passive solar concepts that the Romans adopted, but the Romans used their engineering and design skills to improve the technique. Passive-solar buildings are built based on the orientation of the sun's path and use the sun's rays to heat the interiors.
The time units used by scientists to divide
Earth's history are part of the geological time scale. The geological time
scale measures the timing and the relationships of specific occurrences in the
history of the Earth. It is used mostly by geologists and paleontologists. They
define the earth's history by studying the Earth's composition then connect
facts to major geological or paleontological events. <span>
<span>Through
the use of a geological time scale, scientists have found discoveries and put
together the missing pieces of the past. Probably, the most distinguishable event discovered through
the geological time scale is mass extinction of species.</span>
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The fifteenth Amendment covers
the right to vote regardless of color. It did not allow states from denying any
citizen the right to vote on the grounds of race, color, or previous condition
as a slave. The African American men granted the right to vote.
