Academic article's summary and Response--Missy

Summary:
Human societies is a big natural ecosystem.It's acquired many basic goods,such as seafood,game animals,fooder,fuelwood,timber,and pharmacentical products.These goods played an important and familiar role in the economy.The survival of human civilization depend on provided bu the services of natural ecosystems.These contain the purification of air and water detoxification and decomoposition of wastes,regulation of climate,regeneration of soil fertility and production and maintenance of biodiversity,the key are from ingredients of our agrucultural,pharmancentical,and industrial enterprises.This an exhibition of services is created by a complex interplay of natural cycles powered by solar energy and operating across a wide range of space and time balance.
The process of waste available many trillions of dollars anually.Yet because most of these advantages are not do business in economic markets,they mark 'no price' that could inform society to changes in their supply or amelioration of underlying ecological systems that cause them.Because threats to these systems are increasing,there is a necessary need for proof and control the ecosystem services,not only locally but also globally.And for the proof of their value into decision make processes.
Throughout history,the nature and value of Earth's life support systems have largely been intentionlly disregard until their disruption or loss high lighted their importance.
We believe that land development and use should be consistent with sustainable development strategies.
Response:
Based on the above articles,we are certain that if current trends continue,humanity will dramatically alter virtually all of Earth's remaining natural ecosystems within a few decades.As the result,in order to protect our resources of ecology,people should realize that the loss of any species is at least the loss of source of knowledge and a source natural beauty.Many wild animals are facing the danger of extinction,because the environment that they are living in has changed greatly.For example,with the development of cities,the using of insecticide and serious pollution,their living areas have become narrower and narrower.Many of the wild animals,now are confronted with food crisis.At the same time,man is killing off species just for getting their fur,skin,horns,teeth and meat.So only if human beings take some drastic measures can wild animals be preserved.
Reference:
Ecosystem services:Benefits Supplied to Human Societies by Natural Ecosystems,wikpidiaed by Gretchen C.Daily,Susan Alexander,Paul R...