Scientists have discovered that for more than half of the Earth’s 4.6 billion year history, oxygen (the gas that animals need to breathe) was not present in the environment.​

An event called The Great Oxidation changed all this!​

The Great Oxidation was started by a type of tiny organism that learned a skill that almost all plants know today!​

What is this skill that plants use to make food?

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Shown here is one way that plants store excess food that they have made.​

Part of the ginger family of plants, the underground stem of this plant gives us a bright yellow powder that is used in cooking.​

This powder has been used as a dye and is, even today, a part of multiple home-remedies.​

By what name do we know this plant? Or what is the product that humans make from its underground stem?​

Whales have blowholes on the top of their heads for the purpose of breathing.​

Humans also have noses, nostrils, and the mouth to inhale and exhale.​

Plants have special pores that allow them to take in carbon dioxide and release oxygen. ​

Found on the underside of most leaves, what are these pores called?​

Plants and trees store the extra food they make in different organs like the flower, the roots, stem, etc.​

This plant, whose flower and stalk we eat, is from the cabbage family!​

Also known to have several unique health benefits, what plant/vegetable are we talking about?

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Each individual leaf, known as a leaf blade, has a system of veins that transports water and nutrients to all parts of the leaf.​

Humans also have a system of veins that carry a crucial element of life from all around the body back to the heart!​

What is the function of human veins?