Definition: A low area of land that has been taken from water, especially in the Netherlands, and is kept dry by walls called dikes.

Example: The farmers in the polder grow crops on land that was once underwater.

Definition: In the direction of the pole of a planet or celestial body.

Example: The climate becomes colder as we move poleward.

Definition: In the direction of one of the poles of the Earth, either the North Pole or the South Pole.

Example: The birds migrate poleward during the winter months.

Definition: A fine powder made of tiny grains that come from the male part of flowers and is used for reproduction in plants.

Example: In spring, the air is filled with pollen from blooming flowers.

Definition: An agent, often an insect, that helps plants reproduce by transferring pollen from one flower to another.

Example: Bees are important pollinators that help many plants grow and produce fruit.

Definition: A substance that makes the environment dirty or harmful, especially by contaminating air, water, or soil.

Example: The factory was fined for releasing a dangerous pollutant into the river.

Definition: To make something dirty or harmful, especially by adding waste or chemicals.

Example: Factories can pollute the air and water if they do not follow environmental regulations.

Definition: Made dirty or contaminated, especially by harmful substances or waste.

Example: The river was polluted by industrial waste, making it unsafe for swimming.

Definition: To make something dirty or harmful, especially by adding waste or chemicals.

Example: The river was polluted by industrial waste.

Definition: A person, company, or thing that causes pollution by introducing harmful substances into the environment.

Example: The factory was identified as a major polluter in the region, releasing toxic waste into the river.

Definition: Causing harm to the environment by introducing harmful substances or waste.

Example: The polluting factories are affecting the air quality in the city.

Definition: To make air, water, or land dirty and harmful to living things.

Example: The factory is polluting the river with toxic waste.

Definition: The presence of harmful substances in the environment, especially in air, water, or soil, that can cause damage to health and nature.

Example: Pollution in the city has made the air difficult to breathe.