To suggest that while Nero was harsh, disregardful and arrogant now, that might change in the future.

The author is implying that, even to this day, Nero is still notorious for the bad deeds that he has committed in the past.

The author is implying that Nero's reputation now is being one of the worst Roman emperors but his reputation may change in the future.

Nero's current reputation is that he is respected for his contribution to the development of modern cities whereas compared to his past where he was known for being brutal, neglectful and vain.

The author is hinting that with time to come, children will spend less time outdoors enjoying the environment and instead engage with the internet at home, where they interact less with others as well as with the environment.

The author is hinting that children in the modern era do not spend as much time outside as children in the past and they spend a lot more time on other forms of distractions such as the television and internet.

He is hinting at how children are able to have fun in the parks temporarily, and that alone was good enough.

'Impromptu' suggests that the city that surrounds the park is always preparing for more advancements and people's daily lives are carefully planned to fit a schedule. 'Purposeless' suggests that people in the city always have a goal in mind and do not engage in pointless activities, no matter how fun they may be. 'Ungainful' suggests that the people in the city believe that everything they do should benefit them in an enterprising way.

The author is implying that the world outside the park always requires things to be planned, purposeful and beneficial.

He implies in each case that the values of the world outside the park are opposite to the values of the values in the park as the activities outside the park are planned, objective-driven and has some meaning and worth.

Using similes that liken the process whereby trees cool and filter the air to processes in human biology highlights that trees are important in cities to sustain suitable living conditions in the environment for humans' benefit.

The author used a simile by comparing trees to humans to show that nature is similar to humans which allow the readers to relate and understand the process and to appreciate nature better.

The author uses analogy to help the reader better understand that trees are important.

High Line prohibits many activities that may disturb the tranquility of the area or damage the environment while parks freely allow people to engage in a wide range of activities that range from sports to the arts

High Line restricts any activity that disturbs peacefulness of its users but parks open to all boisterous activities. High Line limits joggers, skateboarders, cyclists and pets from entering but all users from the general public have access to the parks.

The entrance policy of High Line do not allow strenuous exercise while parks allow all kinds if exercise. The entrance policy of High Line does not allow the use of music while parks allow the use of music in anyway possible.

He justifies his use of the word by explaining how zoos and botanical gardens are staged and man-made versions, that are readily accessible to many for casual viewing in the afternoon, of the genuine environment we may never actually explore for real.

He justifies his use of the word 'illusory' to describe visits to the zoo and botanical gardens by explaining that they are fake and we might not ever be able to see it in reality and that they are always readily accessible to glance or take a brief look at.

The author justifies his use of the word "justifies" through his claims that the zoos and botanical gardens are only small depictions of natural habitats of flora and fauna with few of us having seen the real deal.

To accentuate to the reader that parks and green spaces have been considered valuable for many generations and in many place around the world.

It is to end the passage with an impact.

In the introduction, a reference to Nero, a past Roman emperor was made. Hence, 'rus in urbe', a phrase in Latin, which is a language spoken by the Roman Empire, links the conclusion back to the introduction.

The author is implying that the solo jogger was so wrapped up and immersed in his jogging.

The author is trying to suggest that the jogger is living in his own world , isolating himself from whatever that is happening outside.

The solo jogger is protected from the noises and other people around him.

We would expect the parks and green spaces to be peaceful. However in reality, the park is actually noisy and chaotic as a lot of activities are happening in that one place. Hence, the park being chaotic is in contrast with it being sanctuaries of calm.

It is expected that a sanctuary of calm, would be far away from the city or in the countryside. However, in reality parks and green spaces can be found amidst the density of the city which is contrary to the idea of parks and green spaces being a calm sanctuary since it is within the bustling cities