Definition: To break down into smaller pieces or dust over time, often due to decay or rot.

Example: The old leaves began to molder on the ground as winter approached.

Definition: To cause something to break down into smaller pieces or to decay over time.

Example: The old building began to molder after years of neglect.

Definition: The practice of growing only one type of crop or organism in a specific area, which can lead to a lack of diversity.

Example: Farmers often use monoculture to maximize their yields, but it can harm the soil and local ecosystems.

Definition: A type of chemical compound that consists of one oxygen atom bonded to another element, often found in gases like carbon monoxide.

Example: Carbon monoxide is a dangerous gas that can be produced by burning fossil fuels.

Definition: Relating to or found in mountainous regions, especially those that are cool and moist.

Example: The montane forest is home to many unique species of plants and animals.

Definition: An area of land that is covered with heather and low shrubs, often found in upland regions.

Example: The hikers enjoyed the beautiful views of the moorland as they walked through the hills.

Definition: A wet, muddy area of land that is difficult to walk through, or a confusing situation that is hard to escape from.

Example: The hikers got stuck in a morass and had to find a way around it.

Definition: The condition of having many mountains or being full of mountains.

Example: The mountainousness of the region makes it a popular destination for hikers and climbers.

Definition: A wet and sticky mixture, often made of mud and dirt, that can be dirty or unpleasant.

Example: The children played in the muck after the rain, getting their clothes all dirty.

Definition: To make something dirty or to cover it with waste material, often referring to soil or filth.

Example: The workers had to muck the stable before the horses could come in.

Definition: The state of being dirty or covered in mud and filth.

Example: The muckiness of the river made it unsafe for swimming.

Definition: Something that is dirty or covered in mud or filth.

Example: After playing in the rain, the kids came inside looking all mucky.