the act of protection and preserving something, especially the environment

all the living creatures and plants in a particular area, together with their environment or habitat, often considered in relationship to each other

an area of land where a large number of windmills have been built to generate electricity

a kind of energy which is obtained from the sun's rays

used especially of plants and animals which are in danger of being made extinct, at risk of being harmed or destroyed

the cutting down, or burning of trees in a large area

layer of the upper atmosphere where most atmospheric ozone collects, absorbing harmful radiation from the sun

to put material or an object through some kind of process that allows it to be used again

the natural surroundings in which plant or animal usually lives

the animals, birds, insects which live in their natural surroundings and are not domesticated

to make something dirty or harmful by putting something dirty or harmful into it

waste material in the form of liquid discharged from a sewage works, factory and others