In many scientific fields, sparseness and indirectness of empirical evidence pose fundamental challenges to theory development. Theories of the evolution o
The Ozone Layer:The ozone layer is a concentration of ozone gas in the stratosphere. Ozone is important because it absorbs ultraviolet radiation that can harm living things on Earth.Answer and Explanation: The hole in the ozone layer is located over Antarctica. The ozone hole is a region of ...
using substances with biocidal activity to be applied on the support that inhibits microbial growth and prevents its reappearance [4]. These substances, as will be further explored in this paper, can be organic or inorganic and may intervene at different stages of the microorganism's metabolic cyc...
How does perihelion occur? Whenthe north pole is tilted away from the Sun, as it is now, the south pole is tilted toward it. As a result, summer is in full swing south of the equator even as northerners are bracing for a long winter. This morning at perihelion both hemispheres were ...
What is the most abundant gas in the atmosphere? When rounded to the nearest whole percent, it makes up % of the atmosphere. Which of the following fossil fuels is the most abundant on Earth? a. oil shale b. tar sands c. petroleum d. natural gas ...
Earth’s organic molecules likely came from some combination of three sources: chemical reactions in the atmosphere, chemical reactions near deep-sea vents in the oceans, and molecules carried to Earth by asteroids and comets. The first two sources can occur only on worlds with atmospheres or ...
“We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere.” Scientists tracked the change in the amount of radiation entering and leaving the climate system as a result of the fire, and found a measurement closely related to the global air temperature...
We all know that turbulence in the atmosphere makes stars twinkle, but it also severely blurs telescope images. Newton realized this back in 1730, when he wrote in Opticks that “the Air through which we look upon the Stars, is in perpetual Tremor…The only Remedy is a most serene and ...
that's big and strong enough to head straight into the sun goes out with a serious bang. After accelerating to more than 370 miles per second, the comet is flattened by the sun's atmosphere, generating a fantastic explosion thatthrows out cosmic tidal waves of ultraviolet radiation and x-...
Guest Post by Willis Eschenbach For some years now I've been saying that the largest warming is occurring in the northern extratropics, at night, in the winter ... and today I realized that I'd always just taken that on faith because I read it somewhere.