One of the most abundant elements, oxygen is vital to all life on Earth.



Chemistry - Periodic Table - Learni

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Oxygen makes up 21% of

Earth's atmosphere.

Two-thirds of the

human body is...

The grouping of organisms into categories with similar features.
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The use of energy to move particles across a cell membrane from a lower concentration to a higher concentration.
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Reproduction involving just one parent, without the mixing of genetic material with another individual.
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Producing new plants by human intervention and artificial methods.
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A carbohydrate made of long chains of repeated glucose building blocks.
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An organism that can make its own food, being able to produce complex organic compounds, such as proteins and carbohydrates.
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A simple sugar that plays a very important role in all living things.
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An animal that gets its energy from eating plant materials.
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Made up of more than one cell.
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Male reproductive cells, also referred to as the male gametes.
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A naturally occurring thick brown liquid, composed of a mix of hydrocarbons, and usually found deep underground.
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The process that plants use to convert energy from the Sun into chemical energy.
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A food chain simply states which organisms consume each other, and shows how energy moves through living things in an ecosystem.
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Why are leaves commonly flat, spongy and strikingly green? Discover the different parts of a leaf and their function. Biology - Plants - Learning Points. A leaf is made of many layers sandwiched between tough outer layers. Gases enter...

Plants can offer amazing medical cures - even the poisonous ones.
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Discover the systematic grouping of organisms according to the structural or evolutionary relationships among them.
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Potassium is one of the most unpredictable elements, a soft metal that is essential to life.



Chemistry - Periodic Table - Learni

ng Points.

Potass

ium is a soft metal.

In our bodies potassium...

How does a tall tree draw water from its roots to its leaves? And how does food made in leaves reach the rest of a plant? Discover how plants transport resources via the xylem and phloem. Biology - Plants - Learning Points. Transpiration...

Artificial trees: what are they? How do they work? And how could they help to prevent climate change in the future? Human Geography - A Changing World - Learning Points. The rate of climate change is increasing because of the increasing...

What happens when non-living factors in an ecosystem are altered, such as rainfall or air quality? Biology - Ecosystems - Learning Points. An ecosystem is a living system interacting with its physical habitat. Changes in biotic and...

Plants produce oxygen and provide our food, but what do they need to live? Learn why nitrates, phosphates, potassium and magnesium are vital for plant health. Biology - Plants - Learning Points. Understanding how plants grow ensures we...

Not all plants exist simply on sunlight and water. Carnivorous plants eat meat. Discover how some of these carnivores trap and kill their prey. Biology - Plants - Learning Points. Some plants, often in harsh conditions, have adapted to...

Investigating why peregrine falcon populations are threatened by pollution from industry thousands of kilometres away. Biology - Ecosystems - Learning Points. The peregrine falcon lives remotely but is affected by man-made chemicals....