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Plants are capable of converting inorganic substances (carbon dioxide and water) into organic sugar.
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Eukaryotic cells contain a number of organelles.
Chlorophyll is a photosensitive green pigment found in plants; it absorbs light energy, thus plays a vital role in photosynthesis.
Human activity increases the greenhouse effect and leads to global warming.
The oxygen cycle describes the movement of oxygen within its three main reservoirs.
This animation demonstrates the main sources of air pollution: agriculture, industry and urban settlements.
Enzymes are protein molecules catalyzing biochemical reactions. Their activity can be regulated.
This animation explains active and passive transport processes occurring through cell membranes
ATP is the main source of energy for cells.
Widespread heterotrophic unicellular organisms with constantly changing shapes
Carbon is bound in organic substances during photosynthesis, while during breathing, it is released into the atmosphere.
Deforestation has a negative impact on the environment.
The animations demonstrates the structure of a typical flower.
In ecology, a niche is a term describing the way of life of a species.
A colorless, odorless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.
Dicotyledons have two embryonic leaves (cotyledons), while monototyledons have only one.
Surface tension is the property of a liquid that allows it to obtain the smallest surface area possible.
This animation presents the main types of leaves and the differences between monocot and dicot leaves.
The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.
These organs are vital for the survival and development of plants.
The two groups of angiosperms are monocots and dicots.
Unicellular eukaryotes living in freshwaters, capable of feeding autotrophically and heterotrophically.