Oyster discussed the physical characters and geographical distribution of oysters. Oysters are found all over the continents, to ancient humans they are portable and easy to conserve sources of nutrients.
Then the author introduced the life of oysters: Development process of infant oysters, Oyster’s food and how oysters are able to sense the changes in the environment react to it. Oysters shift their sex between males and females supposedly according to temperature.
The rest of the material is about the history of the oyster, the earliest oyster found by humans is from 542-251 million years ago. Humans have a long relationship with oysters. Finally, an outlook for oysters is offered, oyster farming is beneficial to the environment since oysters can filter the filth in the water and several ways to recycle oyster shells are introduced.
1. Are there other animals that are similar to oysters in the sense that they are widespread and are eco-friendly to cultivate.
2. Where do the harmful substances filtered by oysters go? Are they going back to the ecosystem？
3. Will the oyster price ever drop to once it used to be?
The article Manahatta provides a perspective of viewing New York City geographically, instead of an anthropological perspective. Though the article a structure that emerged before human civilization is revealed: the hills, the streams; water and earth.
Being one of the most developed place in the world, manhattan has such a great social and economical significant that people often overlooked the land itself and the environmental challenge it is facing, which also happens in other cities, being the brain of society （versus the country where physical materials such as food are produced) the natural characteristic is often overlooked by the general public.
- will planning mass production of vegetables within the city more sustainable, how to make it more sustainable economically and environmentally？