Science

Refine Search

How does technology affect the environment?

Risks to humans from environmental damage through technology include inhalation of dangerous chemicals in air pollution, contamination of water and food sources, and risk of infections and diseases through exposure to toxic wastes. Flora and fauna risk habitat loss or disruption and extinction of species through exposure to dangerous byproducts of technology. Greenhouse gases affect atmosphere and weather systems, causing global warming and chlorofluorocarbons that deplete the Earth's ozone layer. Technology consumes resources which are not necessarily renewable, including living resource..

Continue Reading

How are striations formed?

As glaciers move, their undersides tend to pick up sand, small stones and other ablative material. As the glacier passes over a stationary rock, these grains scour the underlying rock face, leaving shallow gouges. The marks left on the rocks persist long after the glacier has receded, and the rocks bearing them become telltale signs of the glacial maximums of past ice ages.

Continue Reading

What is the ratio of bleach to water to use for emergency purification of water?

Bleach does not remove sediment from drinking water. Cloudy water should be filtered through a cloth filter prior to being treated with bleach. When filters are unavailable, allow the sediment to settle and move the clean water to another container.\nDrinking bottled water and boiling drinking water are both preferable options to using bleach for water purification. Bleach is only the recommended method of emergency water purification when no alternate water source is available and contaminated water cannot be boiled for one minute.

Continue Reading

What are some examples of monocots and dicots?

Monocots have one cotyledon, leaves with a parallel vein network, scattered vascular bundles, fibrous root systems, flowers with multiples of three petals, large and fleshy seeds and a single embryonic leaf when germination occurs.Dicots possess two cotyledons, a branched vein network, rings of vascular bundles, a taproot system and flowers with multiples of four to five petals. The seeds of dicots come in many different shapes and sizes. When germination takes place, two embryonic leaves sprout.

Continue Reading

What are alpha-glucosidase inhibitors?

Alpha-glucosidase inhibitors do not slow the digestion of simple sugars, often found in candy and juice, only that of complex carbohydrates, WebMD explains. Complex carbohydrates include foods such as potatoes, grains, beans and vegetables. Alpha-glucosidase inhibitors are sometimes used in conjunction with insulin injections or other diabetes medication. People with digestive issues may not be able to use alpha-glucosidase inhibitors.

Continue Reading

What are CO2 intermolecular forces?

Three types of intermolecular forces exist. The weakest are known as Van der Waals forces, which result from random movements of electrons that attract other molecules. In other types of intermolecular forces, the attraction is based on variance of polar bonds. In hydrogen bonds, atoms of hydrogen bond in a way that gives the hydrogen a positive charge. Because CO2 does not contain hydrogen, it does not use hydrogen bonds. Carbon dioxide consists of two oxygen atoms and one carbon atom. It is in gaseous form at room temperature and is a component of the atmosphere of Earth.

Continue Reading

What is sympatric speciation?

Sympatric speciation is one type of speciation that doesn’t occur very often. Other types of speciation include allopatric and parapatric speciation. Sympatric speciation refers to any type of speciation that doesn’t involve a large geographical area. Unlike the other two types, sympatric speciation occurs in one common geographical area. This type of evolution is thought to be a result of organisms living together in similar geographical areas and occupying similar niches. A niche is an organism's vector space of the area in which it can thrive and survive. Included in an organism’..

Continue Reading

What's the difference between sand and dirt?

Clay is the element that makes dirt appear "dirty." It sticks to fabrics and absorbs into surfaces that allow for it, such as skin. Removing dirt from fabrics requires an electrical charge, typically provided by detergent. Sand does not stick to anything, including other particles of sand, because it consists of crystals that do not stick to anything.

Continue Reading

What is the average amount of sunlight in the desert?

Weather and season can also affect how much sun a desert gets. In the winter, the days are shorter thus giving deserts less sun exposure during the day. The exact opposite happens in the summer when they get more hours of sunlight per day. The amount of rain in a desert is low, but it can fluctuate from year to year changing the amount of sun as well.

Continue Reading

What does a seismograph record?

Seismographs come in various forms, although modern versions usually work electromagnetically. The general principle in these devices and all other forms of seismograph is the same though. This means it consists of an element to detect the vibrations. This is called a seismometer. It works by having an element that remains fixed, even while the earth is shaking. So in an electromagnetic seismograph, the magnet remains in a fixed position. The case around it has sensors so movements of the case can be measured against the fixed position of the magnet.The other elements that make up a seismograp..

Continue Reading
Showing 8431 to 8440 of 10000 (1000 Pages)