Plastic straws are one of the single-use plastics of concern regarding plastic pollution, particularly plastic pollution of the ocean. This concern has led several states to enact regulations that eliminate plastic straws in favor of specially compressed cardboard straws....
A.Less than 80 percent pollution is produced by cars.B.Gas-powered cars get energy from power stations.C.Electric cars themselves don't produce any waste.D.It's difficult to control energy from power plants. 2What can we learn from the second paragraph? A. Less than 80 percent pollution...
The circular economy is based on three principles: eliminate waste and pollution; circulate products and materials (at their highest value); and regenerate nature. It is underpinned by a transition to renewable energy and materials, and decouples economic activity from the consumption of finite resour...
71 percent of the Earth's surface is covered by salt-water oceans. The remainder consists of continents and islands, with most of the inhabited land in the Northern Hemisphere. Earth has evolved through geological and biological processes that have left traces of the original conditions. The ...
Come to the company percent recorded in three days to go on a business trip with the manager. Expressions for marketing phone calls. Introduce yourself. This is ken. Hello. This is speaking. I'm from qin speaking. Asking who is on the phone? Excuse me. Who is this? Can I have your...
Non-point source pollution is a serious environmental issue and has attracted a lot of scientific attention. Currently, the influences of grazing on the water and nutrient cycles in alpine meadows, as well as corresponding underlying mechanisms, still remain unclear. The quantitative contributions of ...
need to drop to about $30 per kilowatt before hydrogen is competitive with gasoline as a fuel; however, the National Research Council predicts that the cost of the hydrogen itself, measured on a per mile basis, could soon be as much as 50 percent lower than the current cost of gasoline....
Instead of acquiring and protecting small parcels of land that harbor rare species—a Noah’s Ark strategy—the organization began to work on preserving larger ecosystems. This approach might mean looking outside the preserve, at conditions such as economic development, pollution, and soil erosion....
Nikbakht J, Tabari H, Talaee PH (2013) Streamflow drought severity analysis by percent of normal index (PNI) in northwest Iran. Theor Appl Climatol 112:565–573. doi:10.1007/s00704-012-0750-7 Article Google Scholar Norouzi H, AghaKouchak A, Madani K, Mirchi A, Farahmand A, Conway...
Since the Industrial Revolution began in the early 1700s, the acidity of the oceans has increased about 25 percent, according to the EPA. "This is a problem in the oceans, in large part, because many marine organisms make shells out of calcium carbonate (think corals, oysters), and their...