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The theory of relativity explained like you've never seen before.
The European garden spider and the castor bean tick live at the shrub level of temperate forests.
In this lesson, you will learn about waterfront plants and what they can be used for.
In this lesson, you can learn about various herbs and spices.
Learn about animals inhabiting rivers, lakes and their shorelines.
In this lesson, you will find answers to questions about the pressure of solids, liquids and gases.
The Renaissance, which originated in Italy, was inspired by Ancient Greek and Roman art.
Energy exists in many different forms. Each form can be converted or changed into the other forms.
A digital lesson that gives an overview of vibrations for high-school students.
Near the waterfront, vegetation is greener and more abundant than in the centre of the lakes.
Environmental conditions, and therefore, vegetation along the shore are different from those in the water.
How do plane and curved mirrors form images? You can learn about it in this lesson.
How do optical devices magnify the image of a distant or a very close object?
A lesson about the changes in the shape and function of windows from ancient times to the present day.
The muddy bottom of freshwater bodies provides home to numerous species.
Interesting facts about your intestinal system
A lesson about microorganisms commonly found in lakes, rivers and streams.
Learn about the golden ratio and about two geometry-based art styles.
Like most bird species, the great spotted woodpecker and the great tit live in the foliage of trees and shrubs.
How big are atomic nuclei and what do we know about them?
A lesson about Easter traditions throughout the world.