Answer:
1. I wish people had done more ablout climate change when they still could make a difference.
2. Only a handful of states are left now.
3. Many are either submerged underwater or they are unlivable due to the air conditions.
4. In fact, even my own home town is becoming a victim of this global disaster.
5. The government has now told us that it is no longer safe for us to breath the air without some form of a filter.
6. We are starting to have to ware either oxygen masks or gas masks.
7. Not even the masks they wore in 2020 will help us now.
Explanation:
It was beneficial because it brought many new foods and livestock to different parts of the world promoting more agriculture
It was detrimental because the Europeans killed over 90% of the Native American population
What the excerpt is trying to convey is that, with the current generation we are so preoccupied with own self-interests. We value vanity, self and glory without considering the individuals we face as we walk, as we talk and as we engage. The passage reinstates that individuals have to get back and introspect about not their own gratifications and egotistical desires but the welfare with others, even though it is innate and inevitable that we always point to the ego.