Explanation:
a green and sustainable city is a community of residents, neighbours, workers, and visitors who strive together to balance ecological, economic, and social needs to ensure a clean, healthy and safe environment for all members of society and for generations to come.
It is thanks to Amerigo Vespucci and Christopher Columbus that the land was discovered, and so spurred other countires such as Spain and Portugal into what now is called the Age of Discovery. Not be outdone by the other, both of these countries wished to seize control of the raw materials and land available for their own. What they did not expect was the wide trade off of contact with the Native Americans. This includes plants, animals, diseases, and even slaves.
Double headed arrows indicate positive or negative effects of one variable on another
Answer:
Megacities have an impact on public health, like contamination of water. Overpopulated places can bring diseases and a lack of health protection.
Explanation:
Megacities are the base for gas emissions that could be very dangerous for the environment. Traffic jam is getting worse day by day. Almost half of the habitant of one city spends at least one hour in the car to get to work.
