TEXT ACTIVIY WATER CYCLE

Answer these questions:

1. what percentage of the earth's surface is covered by water? 
2. what are the processes by which water vapor is produced? 
3. What are the two ways you can take the water after reaching the surface?

 Read the text and find:

1. The opposite of dryness:
2. The opposite of dead:
3. The synonym of wet:
4. The synonym of sea:

Three quarters of the Earth's surface is covered by the waters of the oceans, lakes, rivers, streams and springs. When drilling in the subsurface, usually water can be found. This is just a different depths (groundwater or groundwater).

The process known as "water cycle" is that by which the ocean water evaporates and precipitates on earth, where it is distributed in rivers and lakes, mainly ensuring groundwater recharge. This water is used by plants, animals and man.

Water vapor is produced by evaporation on land and water bodies, and transpiration of living beings. This vapor circulates through the atmosphere and falls as rain or snow. Upon reaching the surface, the water follows two paths:

In amounts determined by the intensity of the rain as well as porosity, permeability, thickness and antecedent soil moisture, some of the water is discharged directly into streams and rivers, where it is absorbed into the oceans and inland water bodies the rest infiltrates into the ground.

Some water is infiltrated soil moisture, and can evaporate directly or penetrate plant roots for transpiration from leaves. The portion of water that exceeds the forces of cohesion and adhesion of soil, filtered down and accumulates in the call saturation zone to form an underground water reservoir, whose surface is called water table.

Under normal conditions, the water level increases as intermittently filling or recharging will, and then declines as a result of continuous drainage gutters are natural springs.

Sulfuric acid is the main link in the chain of production of chemical muchosproductos. Use in chemical synthesis of many drugs, in lafabricación battery, purification of oil in the ácidosulfúrico metallurgy is used to remove the oxide layers formed on the steel and as in the production of synthetic fibers and dyes. It is obtained from the sulphate amonioque used in the manufacture of fertilizers. In ysulfonatos sulfate detergents are used also from the sulfuric acid, is also used in lapurificación of fats and oils. Thus, the sulfuric acid is not sóloresponsable of acid rain. Their uses are very varied and importantes.El sulfuric acid is commercially available in large numbers and purities deconcentraciones. There are two main processes for laproducción sulfuric acid method and the lead chamber process decontacto. The lead chamber process is the oldest of the two processes currently used to produce yes largely consumed lafabricación acid fertilizer. This method produces a relatively dilute acid (62% -78% H2SO4)

 This corresponds to the abstract of a scientific paper for concentrations of carbon dioxide in the atmosphere and how this impacts on global warming

 ABSTRACT. The glasshouse effect caused by atmospheric CO2: a new thermodynamic interpretation: At present times the use of models to simulate and predict the climate change and its consequences on global ecological processes has contributed to a better understanding of the phenomena in several disciplines. However, there is evidence that current models fail to simulate a number of well known climatic changes recorded around the world, which suggests that many of the processes involved in climatic change are still not fully understood. A new thermodynamic interpretation of the atmospheric glasshouse effect caused by CO2 is presented, which is based on the relationship between temperature and heat considered from the corpuscular theory of energy. The activated complex theory used in chemical kinetics is interpreted as probabilistic criteria, applicable therefore not only to the chemical reactions but also to physical interactions. Under this perspective, this article suggests that