1- Environment
The environment is everything that surrounds us: plants, animals, buildings, air, water-literally everything that can affect us in any way. The urbanization of a town, with its buildings and traffic and its noise and smells, where everyone is on top of everyone else, is a far cry from that of the countryside, with its feeling of spaciousness.
Ecology is the science of how living creatures and plants exist together and depend on each other and on the local environment. Where an environment is undisturbed, the ecology of an area is in balance, but if a creature is exterminated, the balance of nature will be disturbed.
Humankind is a part of the environment and has done more to upset the ecology during its short span on earth than any other living creature. They have done this by their ignorance, their greed, and their irresponsibility. They have poisoned the atmosphere and polluted both land and water. They have wasted the earth's natural resources with no thought for the future and has brought out the most devastating ways of killing his fellow man-and every other sort of life at the same time.
One of the main causes of the earth's troubles is that the world is overpopulated and that this overpopulation is growing at an ever-increasing rate. At the same time, we are using up our natural resources, fuels and mineral ores, at an ever-increasing rate with no hope of replacing them.
The situation is getting out of hand. Time is running out. Since mankind has done so much damage, it is up to us to try to put matters right- if it is not already too late. If there is to be any remedy for our ills, that remedy ultimately lies in the hands of the young, and the sooner they start doing something about it, the better.
2- Vocabulary
Environment

Todo lo que nos rodea. Pueden ser cosas vivas o no vivas. Incluye fuerzas físicas, químicas y otras fuerzas naturales.
Ecology

Estudio de las relaciones entre las plantas, los animales, las personas y su entorno, y los equilibrios entre estas relaciones.
Urbanization

Proceso por el cual un gran número de personas se concentran permanentemente en áreas relativamente pequeñas, formando ciudades.
Disturbed

Roto o alterado en su estructura o función.
Humankind

Los seres humanos considerados colectivamente. La raza humana.
Greed

Un deseo muy fuerte de obtener continuamente más de algo.
Poison

Una sustancia que, a través de su acción química, suele matar, lesionar o perjudicar a un organismo.
Polluted

Contaminados con sustancias nocivas o venenosas.
Natural resources

Recursos que existen sin la intervención de la humanidad.
Overpopulated

Lleno, con un número excesivo de personas, agotando los recursos disponibles.
Fuel

Una sustancia que se utiliza para proporcionar calor o electricidad, por lo general mediante la quema.
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