Viruses and viral diseases
The virus is an infectious agent that does not have a cellular structure, and is capable of reproducing only within cells of living organisms. For this they are referred to…

Continue reading →

Pollution of reservoirs
Water pollution is a serious environmental problem. Indeed, water is essential for the existence of all living organisms, including humans. But its contamination makes it impossible to use water for…

Continue reading →

Flies and their role in nature
Flies are very common flying two-winged insects. They inhabit practically all warm areas of the planet, delivering many problems to living organisms, including people. After all, flies are the carriers…

Continue reading →

although they

The lakes and their role in nature

The lake is a naturally occurring water filled with water in the boundaries of a lake bowl and has no direct connection with the sea or the ocean. Or, according to geographical definition, a lake is a naturally occurring closed entrainment filled with water in the earth’s surface.
The lakes are not part of the world ocean, being considered as something intermediate between the ponds and the seas. Continue reading

World ocean and its properties

The ocean covers about 70% of the surface of our planet. Thus, it is an aquatic membrane, stretched almost all over the surface of the Earth. The oceans are continuous, and wash areas of land on all sides, be it continents, or islands.

The ocean on the map
The author of the photo is Link576, the link to the original (photo has been changed).
Parts of the world ocean Continue reading

Cultivated plants of our planet

Crop plants are those plants that are grown by humans for eating, feeding animals, receiving medicines or raw materials, etc. All these plants are also called agro-crops.

Barley
Classification

1. Grain crops. They are also called grasses. They are very important for a person, since they make up his basic diet. In addition, cereals are used as feed for animals, and also used in production. In general, cereals are very important. Plants such as wheat, rice, barley, oats, corn, buckwheat, rye and many others enter this group. Continue reading

WWF - World Wildlife Fund
The World Wildlife Fund (WWF) is one of the largest independent international public organizations engaged in the conservation and restoration of the environment. Its main goal is to maintain the…

...

Belladonna, or Beauty
Belladonna is a poisonous plant used in the Middle Ages for cosmetic purposes. Due to what else its name appeared - Krasavka. And because of its influence on people, it…

...