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Large hairy armadillo

One of the most widespread armadillo species in South America. It is an accomplished digger and spends most of its time below ground.

Black snake forest

We also utilize the degradable nature of sodium bicarbonate in our everyday kitchen life: it is the basis for baking powder.

The jaguar

The jaguar, which catches its prey with one leap, is one of the most dangerous predators in South America.

On the track of the rain - Savannahs

The flora and fauna of the savannahs adapt to the climate.

Where all water disappears - The Desert

Deserts cover nearly one-seventh of the Earth's land surface.

The Baikal fault line

The deepest lake in Earth was formed in a rift valley created by the Baikal Rift Zone.

Spectacled caiman

The spectacled caiman is a crocodilian reptile found in much of Central and South America. It is the most common of all crocodilian species.

The formation of the Andes

The Andes were formed by the collision of two tectonic plates, one oceanic and one continental.

Travertine Terraces

Find out the secret of the unique beauty of travertine terraces.

Taking better photos

If you already have your brand new camera but are not satisfied with the pictures you take, we will now help you navigate through the combinations of...

The pupillary light reflex

In strong light the pupil contracts, while in low light it dilates.

Test tutorial 4.

Let’s find out how to use the Test Editor tool.

Hand-powered paper turbine

Let’s rotate a paper wheel with the heat of our hands.

Levitating magnets

This simple experiment demonstrates the phenomenon of magnetic levitation.

Plotting points at a given distance from a line

Line e is given. Plot point P at a distance of 2 cm from line e.

The patellar reflex

When the patellar tendon is lightly tapped, the extensor muscle stretches slightly.

Colour vision test

Red-green colour deficiency is a genetic condition.

Making a tissue sample

Examination of the cells and stomas on the epidermis of a pelargonium at 100x magnification.

The reflection of a point across an axis

Axis t and point P are given. Let’s plot the mirror image (point P’) of point P across axis t.

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