one of the most serious issue is the gray population. Nevertheless, the significance of elderly people in society cannot be overstated. As the population ages, it is imperative that we acknowledge and appreciate the contributions and...
FORMS OF ENERGY Chemical Energy Chemical Energy: is contained in the bonds of a molecule. It is energy in reverse, since the bonds need to be broken to free the energy they contain. The amount of energy depends on the strength of the bonds between the atoms. The stronger the bond the m...
Fusion Energy Science Quick Facts Fusion offers a potential long-term energy source that uses abundant fuel supplies and does not produce greenhouse gases or long-lived radioactive waste. Fusion releases energy because the mass of its bound nucleus is less than the mass of it component protons an...
All rights reserved.Name Date Class ■ • Physical science is divided into two main areas: chemistry and physics. • is the study of the properties of matter. It also is the study of how matter changes. • is the study of matter and energy. It is also the study of how matter ...
The Environmental and Energy Study Institute, a nonprofit organization promoting sustainable energy, defines biomass as "living or recently dead organisms and any byproducts of those organisms, plant or animal. The term is generally understood to exclude coal, oil and other fossilized remnants of orga...
What is a Telescope? Posted inScientific Devices & Techniques A telescope is a broad term that covers a range of instruments for investigating the electro-magnetic spectrum. For this article we will look at the more common instruments that beginners and amateurs may use to investigate the night ...
Of course, such growth may not persist in the long term—which is what Mr. 出自-2016年6月阅读原文 It is clear that consumers don't always know what they are getting. 出自-2016年6月阅读原文 I've been looking at what self-proclaimed experts were saying about unemployment during the Great...
31.Which of the following is NOT true? A. The high price of building reservoirs is making the situation worse. B. Population growth is the main reason for water shortages. C. Global warming could increase the long-term water shortfall to 1,815 billion cubic metres. ...
It turns out that there's a technical term for this practice:values affirmation. And what it boils down to is recognizing, and strengthening, the personal values you hold most dear. When you affirm a core personal value,...
Sustainability is the theme of our time and also the grandest challenge to humanity. Since the 1970s,the term,sustainable development,has frequently appeared in the scientific literature, governmental documents,media promotions for public goods,and commercial advertisements. However,the science that provid...