INTRODUCTION Earth is shield by the atmosphere where it is divided into several layer called ozone. Ozone is a molecule of three oxygen atom bound together and it is unstable and highly reactive molecule. Ozone is naturally in stratosphere when highly energetic solar radiation strikes oxygen molecule (O2) and cause the two oxygen atom to split apart in a process called Photolysis. A freed atom collide with another oxygen then it join up forming ozone, O3 . The formation of ozone is explained with certain mechanism where both ozone molecule,O3 and oxygen molecules, O2 is absorb ultraviolet in difference wavelength, the ozone molecule is absorbs in a region between 240 nm-280 nm .
You can have too much of a good thing. This is what seems to be happening in the earth’s atmosphere. Greenhouse gases surround the earth, and trap heat inside. They control the amount of heat coming in and going out of the earth’s atmosphere. Without greenhouse gases, the earth’s surface would be approximately -40C.
These gases together are called the atmosphere. The second layer of the atmosphere is the stratosphere. The stratosphere contains 15% of the total mass of the atmosphere. One of the major layers of the stratosphere is the ozone layer. This layer is at an altitude of 10 km.
and McKenzie,S.W , 2003). Biochemical Oxygen Demand (BOD) Biochemical oxygen demand represents the environmental procedure to determine the quantity of oxygen consumed by bacteria and other microorganisms while they decompose organic matter under aerobic conditions at a certain temperature over a specific time period. Oxygen demand is a measure of the amount of oxidizable substances in a water sample that can lower DO concentrations (Nemerow, 1974; Tchobanoglous and Schroeder, 1985). The amount of dissolved oxygen in rivers and streams affected by BOD. Temperature, pH, the presence of certain kinds of microorganisms, and the type of organic and inorganic material in the water are the variables that gives effect to the rate of oxygen consumption.
This complex cycle involves water passing from gas in the form of atmosphere to liquid and to solid which is seen in the form of glacier. Water cycle involves the use and exchange of energy leading to the change of temperature which is integrated in the movement of water between the spheres of the Earth. Earth stores water in their natural reservoir such as oceans, lakes, rivers and groundwater. As the Sun heats bodies of water in seas and oceans, it drives the water cycle. The Sun causes the water to evaporate in the form of vapor in the atmosphere.
Earth is compassed of layers of gasses, commonly known as air, that encompasses the planet Earth and is held by Earth's gravity. The atmospheres of Earth ensure life on Earth by making pressure permitting for fluid water to exist on the Earth's surface, captivating ultraviolet sun based radiation, warming the surface through warm retention aka the Greenhouse effect, and lessening temperature extremes between day and night. The atmosphere is essentially everything above the Earth’s surface. It begins at ground level and then just keeps on going upward, getting thinner and colder until it finally breaks down into space. The atmosphere makes our world bearable to live on.
Air pollution can fall into three main categories. Produced by mobile sources such cas vehicle engines from gasoline-powered cars, stationary sources such as mining, coal production or heating from homes, and indoor sources such as tobacco smoking. (Yeung. 2000) Our atmosphere is Earth’s protective layer, made up of gas particles and clouds. With the use of burning fossil
Hydrological cycle describes the continuous water circulation on, above or below the Earth surface which include lithosphere, hydrosphere, atmosphere and biosphere. Without hydrological cycle exist in Earth, biogeochemical cycles could not exist, ecosystems could not function and life could not be maintained (Smith, 1992). Oceans play the main role in the hydrological cycle as they hold 97% of the total water in Earth. Natural processes on Earth rely on the forces produced by the hydrological cycle to support and provide enough water supply for plants, animals and human. Besides, the movements of nutrients, pathogens and sediments also occur in process of hydrological cycle.
This process is called photosynthesis. During the process of photosynthesis, plants release oxygen into the air. Photosynthesis leads to the creation of glucose for the plant and oxygen for non-plant biotic things such as animals and homo-sapiens. Which is great because of the respiration that comes from all biotic things. Respiration occurs in all living cells creating energy.