Stratospheric ozone is formed
naturally by chemical reactions involving solar ultraviolet
radiation (sunlight) and oxygen molecules, which make up
21% of the atmosphere. In the first step, solar ultraviolet
radiation breaks apart one oxygen molecule (O2) to produce
two oxygen atoms (2 O). In the second step,
each of these highly reactive atoms combines with an oxygen
molecule to produce an ozone molecule (O3). These reactions
occur continually whenever solar ultraviolet radiation is present
in the stratosphere. As a result, the largest ozone production
occurs in the tropical stratosphere.
Answer:
The Asian elephant is the largest land mammal on the Asian continent. They inhabit dry to wet forest and grassland habitats in 13 range countries spanning South and Southeast Asia. While they have preferred forage plants, Asian elephants have adapted to surviving on resources that vary based on the area.
Asian elephants are extremely sociable, forming groups of six to seven related females that are led by the oldest female, the matriarch. Like African elephants, these groups occasionally join others to form larger herds, although these associations are relatively short-lived. In Asia, elephant herd sizes are significantly smaller than those of savannah elephants in Africa.
More than two-thirds of an elephant's day may be spent feeding on grasses, but it also eats large amounts of tree bark, roots, leaves, and small stems. Cultivated crops such as bananas, rice, and sugarcane are favorite foods. Elephants are always close to a source of fresh water because they need to drink at least once a day.
In Asia, humans have had close associations with elephants over many centuries, and elephants have become important cultural icons. According to Hindu mythology, the gods (deva) and the demons (asura) churned the oceans in a search for the elixir of life so that they would become immortal. As they did so, nine jewels surfaced, one of which was the elephant. In Hinduism, the powerful deity honored before all sacred rituals is the elephant-headed Lord Ganesha, who is also called the Remover of Obstacles.
Railroads move goods similarly to trucks on the interstates and highways. Railroads help ship goods within the state taking products made in Georgia from country to county. From the state, transporting goods made in Georgia and other states to the airports and ports to be shippers to other countries.
Eruptions<span>. </span>Geyser<span> activity, like all hot spring activity, is caused by surface water gradually seeping down through the ground until it meets rock heated by magma. The geothermally heated water then rises back toward the surface by convection through porous and fractured rocks.</span>
Answer:
1.<u><em>Immediate impact of the Chernobyl accident. The accident caused the largest uncontrolled radioactive release into the environment ever recorded for any civilian operation, and large quantities of radioactive substances were released into the air for about 10 days.</em></u>
2.<u><em>The areas we identified as being significantly advanced following Chernobyl were: the importance of semi-natural ecosystems in human dose formation; the characterisation and environmental behaviour of ‘hot particles'; the development and application of countermeasures; the “fixation” and long term bioavailability of radiocaesium and; the effects of radiation on plants and animals.</em></u>