Tornado and tornado: what is it, how is it formed, classification, how to be saved, photos and video...

The largest volcanoes in the world - list, description, altitude, photos and video...

A variety of wildlife - kingdoms, species, description, photos and videos...

Why is a ripped unripe fruit ripening?...

The largest waterfalls in the world - list, height, description, photo and video...

Equatorial forests - who lives, animals, photos and video...

The fastest growing plants and trees...

What happens beneath fallen leaves? Photo and video...

Natural areas of Russia: species, names, map, climate, description, soil, characteristics, animals, plants, photos and videos...

Photosynthesis - what is it, determining how it happens, phases, meaning, photos and video...

How is wind speed measured?...

Is it true that in winter there is less oxygen in the air?...

Why did the Big Blue Hole arise?...

Why, when it is cloudy, is the pressure low, and when it is clear - high? Reasons, photos and videos...

How and why do trees survive in winter?...

Where does the sea meet the forest?...

Why are there no tides in the Black Sea?...

Why are fruits sweet only when ripened? Description, photo and video...

Why does "September" mean the seventh, if in fact it is the ninth?...

Habitat: what it is, what affects, diversity, photos and video...