2. Explain the Energy Flow in the Eco System.
3. What is Bio-diversity and its values? Explain.
4. What are the threats to bio diversity?
Section- C
1. Give the meaning of Environmental Pollution with examples.
2. Explain air, water, soil, marine and noise pollutions and suggest measures to control them.
3. What are the causes of solid wastes?
Answers
Explanation:
Q2
Energy Flow in Ecosystem
The energy flow in the ecosystem is one of the major factors that support the survival of such a great number of organisms. For almost all organisms on earth, the primary source of energy is solar energy. It is amusing to find that we receive less than 50 per cent of the sun’s effective radiation on earth. When we say effective radiation, we mean the radiation, which can be used by plants to carry out photosynthesis.
Q3
Biodiversity has a fundamental value to humans because we are so dependent on it for our cultural, economic, and environmental well-being. Some argue that it is our moral responsibility to preserve the Earth’s incredible diversity for the next generation. Others simply like knowing that nature’s great diversity exists and that the opportunity to utilize it later, if need be, is secure. Scientists value biodiversity because it offers clues about natural systems that we are still trying to understandBiodiversity forms the backbone of viable ecosystems on which we depend on for basic necessities, security, and health. By breaking down plant and animal matter, for example, insects and other invertebrates make nutrients available to plants and are integral to the carbon and nitrogen cycles. Other species pollinate crops, an essential service for farmers. Healthy ecosystems can mitigate or prevent flooding, erosion, and other natural disasters. These ecosystem services also play a hand in the functioning of our climate and in both air and water quality.
Q4
Biodiversity is under serious threat as a result of human activities. The main dangers worldwide are population growth and resource consumption, climate change and global warming, habitat conversion and urbanisation, invasive alien species, over-exploitation of natural resources and environmental degradation.the main reasons for the decline of biodiversity are more specifically the destruction and fragmentation of natural habitats, pollution and eutrophication caused by agricultural and industrial practices, excessive water catchments in some areas, climate change and perturbations linked to leisure and tourism. In marine areas, some specific threats can be added to those mentioned above, such as overfishing or sand and gravel extraction.
Section- C
Q1
Environmental pollution is defined as "the contamination of the physical and biological components of the earth/atmosphere system to such an extent that normal environmental processes are adversely affected Pollution is the introduction of contaminants into the environment that cause harm or discomfort to humans or other living organisms, or that damage the environment, which can come in the form of chemical substances, or energy such as noise, heat or light. Pollutants can be naturally occurring substances or energies, but are considered contaminants when in excess of natural levels.
ex.. Air pollution
Q2
Environmental pollution has many facets, and the resultant health risks include diseases in almost all organ systems. Thus, a chapter on air and water pollution control links with chapters on, for instance, diarrheal diseases (chapter 19), respiratory diseases in children and adults (chapters 25 and 35), cancers (chapter 29), neurological disorders (chapter 32), and cardiovascular disease (chapter 33), as well as with a number of chapters dealing with health care issues.
Air Pollution
Air pollutants are usually classified into suspended particulate matter (PM) (dusts, fumes, mists, and smokes); gaseous pollutants (gases and vapors); and odors.
Water Pollution
Chemical pollution of surface water can create health risks, because such waterways are often used directly as drinking water sources or connected with shallow wells used for drinking water. In addition, waterways have important roles for washing and cleaning, for fishing and fish farming, and for recreation.
Q3.
Causes of Solid Waste Pollution
waste, and hazardous wastes. Municipal waste arises from domestic activities of human beings. Industrial waste arises from industrial activities and hazardous wastes are the substances which causes hazard to plants, animals and human beings.
yaar itna struggle kiya hai to follow aur thanks bolo
dosto brainlist Answer bhi kardo yaar