Atoms and ions consist of electrons that occupy orbitals somewhere around the nucleus of the atom. Orbitals are spaces around the nucleus that an electron has the greatest likelihood of occupying. Different orbitals have different energy levels and electrons will tend to occupy orbitals with the lowe...
The soil is different depending on your geographic region. There are manydifferent soil types, but most vegetables, fruits, and flowers prefer crumbly soil that’s full of organic matter, humus, and microorganisms, and has a neutral pH. Your soil might be: Clay: too dense for gardening, can...
Reductions in emissions are possible through changes in business practices for some companies, but a wholesale elimination of emissions isn't feasible for many firms. Carbon offsets fund emission-reduction activities such as tree-planting or nature conservation in lieu of completely eliminating their ow...
Human beings are not aware of the environment. People often say: its great for children to study on a clean campus. But this is not the case. Now there are paper planes everywhere on the campus. Looking at the classroom again, it is not too much to describe it as "garbage pile", bu...
or six electrons in its outermost orbital. You can also figure out how many electrons are in its first, second and third orbitals: The first orbital can hold a maximum of two electrons, while the second has four suborbitals and so can hold a total of eight electrons. The third shell of...
Petroleum is non-renewable energy, and other energy sources, such as solar and wind power, are becoming prominent. Understanding Petroleum Theextractionand processing of petroleum and its availability is a driver of the world's economy and geopolitics. Many of thelargest companiesin the world are ...
Acid rain, with a pH of 5.0 or less, is formed when pollutants like sulfur dioxide and nitrogen oxides from burning fossil fuels react with water vapor in the atmosphere, creating sulfuric and nitric acids. Acid rain can damage aquatic ecosystems by lowering pH levels and killing sensitive spec...
There are many processes and phases involved in gasoline production and its subsequent delivery to gas stations. For this reason, theU.S. Energy Information Administrationdoesn’t attempt to pinpoint where fuel from local gas stations originates. Generally, it begins as crude oil within a petroleu...
The above research has laid a foundation for in-depth understanding of the green and low-carbon effects of the digital economy. However, the following shortcomings remain. On the one hand, data elements are the core content and key driving force of the digital economy, and although many studie...
(1) environmental technology standards can have “win–win” effects, i.e., environmental technology standards can simultaneously improve the environmental performance and the economic performance; (2) the dynamic effects of environmental technology standards are proven in the parallel trend test; (3)...