The Earth is like our mother.She gives live to all the living things on the Earth.And she provice us with air、food、water and other things we need for living.Once she was beautiful ahd rich.But mow she is crying, becacuse she is becoming dirtier and dirtier, poorer and poorer. It'...
Most human-made ecosystems are not closed ecosystems. They usually require huge inputs of matter and energy. Zoos are an excellent example of an unnatural ecosystem where matter is not recycled within the system. In natural ecosystems, some matter is gained or lost, butmost matter is recycled....
“There is no more rewarding experience in life than being part of an audience where everybody is leaning forward in silence, thoroughly carried away by a great performance of a masterpiece,” one commenter wrote. “Why is it so difficult for folks to develop an appreciation and understanding ...
It is, therefore, an unsustainable resource, and since petroleum is also used to make important commodities like gasoline and engine oil, the wisdom of its use for fabric has been disputed by commentators at all ends of the political spectrum. It takes a great deal of energy and labor to...
the laying of drainage system and detergent used to grow, consume the oxygen in the water, fish died, deterioration of ecosystem. Human activities can make a lot of industrial and agricultural pollutants into the water, the water is polluted. The world each year about 4200 sewage into the riv...
Wool from cashmere goats is not used in any industrial applications, which means that the entire global cashmere economy is dependent on the production of cashmere garments. By choosing to work with an ethical, natural cashmere producer, you can help encourage the growth of remote economies and ...
The matter of the earth mostly stays on the earth, it just moves from place to place. This process of matter moving from one form to another, and from one location to another, is calledmatter cycling. In other words, the matter on the earth has been recycled multiple times across ...
“Earth is now well outside of the safe operating space for humanity” [4] which may have calamitous consequences for all life on Earth since human and planetary healthFootnote2ultimately depend on ecosystem services such as food and freshwater provision and climate and infectious disease ...
(a) How is energy obtained from organic molecules? (b) What are the forms of that energy? (c) How is each type stored? (d) How is each type of energy used in the cell? Explain how energy enters, flows, and exits an ecosystem. ...
Protecting our environment is about protecting ourselves. A healthy environment means cleaner air and water, which leads to better health for everyone. It also means more biodiversity, which helps to ensure food security and a more resilient ecosystem. Think about it: We only...