think about the situation we human being are facing nowadays ecosystem .give me fast
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Answer:
Changes in ecosystem services influence all components of human well-being, including the basic material needs for a good life, health, good social relations, security, and freedom of choice and action Humans are fully dependent on Earth’s ecosystems and the services that they provide, such as food, clean water, disease regulation, climate regulation, spiritual fulfillment, and aesthetic enjoyment. The relationship between ecosystem services and human well-being is mediated by access to manufactured, human, and social capital. Human well-being depends on ecosystem services but also on the supply and quality of social capital, technology, and institutions. These factors mediate the relationship between ecosystem services and human well-being in ways that remain contested and incompletely understood. The relationship between human well-being and ecosystem services is not linear. When an ecosystem service is abundant relative to the demand, a marginal increase in ecosystem services generally contributes only slightly to human well-being (or may even diminish it). But when the service is relatively scarce, a small decrease can substantially reduce human well-being Global environmental change is occurring so rapidly that it is affecting the health and threatening the future of many of Earth’s inhabitants, including human beings. Global warming; contamination of the air, water, and soil; and rampant deforestation have led to a collapse in biodiversity that threatens the integrity of the biophysical systems upon which all organisms depend.
A basic cause of environmental degradation is human overpopulation and the nonsustainable consumption of natural resources by the human community. Everything that we have accomplished in the fields of medicine and public health could be undermined if we do not pay attention to these rapid environmental changes. As healers, human beings, and members of the biological community, we need to broaden our perspective on health and disease. Unless we devote our attention to stabilizing and repairing the ecosystem, our professional and personal accomplishments as health professionals may be swept away.
Health care providers—particularly physicians—can play a role by adopting an ecosystem health perspective as we ply our trade. By helping people avoid unwanted pregnancies, by using resources parsimoniously, and by staying engaged in the natural world, we can help to prevent the collapse of the biological systems upon which we all depend.
Explanation:
Answer:Environmental Threats and Opportunities
The goals for a transition toward sustainability, as we set them out in Chapter 1, are to meet human needs over the next two generations while reducing hunger and poverty and preserving our environmental life support systems. The activities to approach this goal can only move ahead within the constraints set by resources and the environment. Many people have argued that, unless we make dramatic changes in our human enterprises, the development needed to meet future human needs risks damaging the life-support capabilities of the earth—which in turn would of course prevent society from meeting its goals. In this chapter, we therefore ask two related questions:
• What are the greatest threats that humanity will encounter as it attempts to navigate the transition to sustainability?
• What are the most promising opportunities for avoiding or circumventing these threats on the path to sustainability?
Our object is not to predict what environmental damages might be caused by development at particular times and places—a largely futile activity for all but the most specific and immediate development plans. Rather, it is to highlight some of the most serious environmental obstacles that might be met in plausible efforts to reach the goals outlined in Chapter 1 and along development paths such as those explored in Chapters 2 and 3, to take timely steps to avoid or circumvent these obstacles.1
This chapter begins with a brief discussion of the approaches and issues we considered in scouting the environmental hazards that societies may confront. We then turn to efforts to assess the relative severity of
these hazards for particular times and places. Following the lead of the Brundtland Commission, we next analyze how human activities in a number of crucial developmental sectors might pose important challenges and opportunities for navigating the transition toward sustainability. Finally, we turn to the question of interactions—how multiple developmental activities may interact with complex environmental systems to transform the very nature of the journey before us.
Throughout our discussion, we not only seek to identify potential obstacles to a successful transition, but also to highlight the skills, knowledge, and materials that might be most useful in detecting and understanding the hazards, and in devising solutions or mid-course corrections to address them. We conclude that in any given place there are significant if often place-specific opportunities for societies to pursue goals of meeting human needs while sustaining earth's life support systems. Some of these opportunities are likely to be realized by individual actors—firms, organizations, and states—in the normal course of their self-interested activities. Others, however, will require integrative planning and management approaches.
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