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I bet I can make a pine cone close itself.

I bet I can tell how strong your lungs are.

I bet I can raise paramecia in a jar.

I bet I can trick your eyes.

I bet I can make starch disappear using saliva.

I bet I can extract the skeleton of a leaf.

I bet you did not know you could skin a plant.

I bet I can find crystals in onion.

I bet I can make muddy water clean.

I bet I can make you lose your sense of balance.

I bet I can prove that it is worth using sunscreen.

I bet I can create realistic pictures without a camera.

I bet I can make an orange either float or sink in water.

I bet I can make highlighter marks disappear using a lemon.

This lesson is about the life and work of the celebrated British zoologist and writer.

I bet I can make fat disappear from milk.

Travel back in time by learning about the longest-living species on Earth.

In this lesson, you can learn about various types of cloning, their functioning and their uses.

In this lesson, you can learn about plant hormones, their effects and their agricultural importance.

This lesson compares the functioning of the human body and that of cars.

Eukaryotic cells with nuclei measuring only a few micrometres may contain nearly 2 metres of DNA, coiled multiple times.

Neurons are cells specialised for transmitting electric signals.

Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.

The urinary system serves for the removal of harmful and useless materials from the body.