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Extras

This lesson compares the organelles found in plant and animal cells.

In this lesson, you can learn about the history, structure and use of optical microscopes.

Egg cells and sperm cells are gametes responsible for reproduction.

One of the properties of aqueous solutions is their pH, which can be acidic, neutral or alkaline.

Learn about the occurrence and properties of ammonia.

Learn about the history of Earth and how life developed on it.

Learn about the structure and use of Bunsen burners.

Learn about vertebrates, their characteristics and categorisation.

Learn about one of the greatest leading figures in history.

Have you ever wondered what type of hammer you should use for different nails?

This lesson helps you to understand the complicated world of banking better.

In this lesson, you can learn about the magnetic properties of some materials.

This lesson is about mass measurement and accelerating reference systems.

In this lesson, you can learn about uniformly accelerated motions.

In this lesson, you can learn about basic correlations related to direct current circuits.

This lesson is about the thermal expansion of solid materials and liquids.

This lesson is about the interaction between the Earth and objects moving near it.

What is the fastest way to go through a tunnel?

This lesson is about the history of electrostatic machines.

Learn about Rosa Parks, one of the most significant social rights activists in US history.

Is there an actual tornado in your tea? Why does sugar gather in the middle after stirring?

In this lesson, you can learn about two types of functions.