There are a lot of problems facing people on the planet Earth nowadays. The problems that demand world action are: the growth of world population, economic crises, ethnic conflicts.
But the most urgent problem concerning the people of the whole world is an ecological one.
What is ecology? Ecology is the science that studies the conditions of the habitat of man, animals and plants for the benefit of present and future generations. Читать далее Human Beings and Their Environment
The environment needs to be cleaned up. Unfortunately, millions of people on our planet live in areas in which the air is not safe to breathe.
The biggest problem is ozone, formed from hydrocarbons and nitrogen oxides. Ozone can age our lungs prematurely making us more susceptible to dangerous diseases, including cancer. Читать далее Cleaning Up the Environment
A hedgehog is a little animal that eats insects.
It has a pointed snout and sharp hard spines on its back and sides. When it is frightened or attacked it rolls up into a ball with only its spines showing.
The hedgehogs are useful. They preserve plants because they eat insects. People must protect them.
I have seen hedgehogs in the country. They live in the central parts of Russia in the forests. Their food is insects, mice.
People should not touch the hedgehogs; they must take care of them. Читать далее A hedgehog