3 087 mots et expressions · 21 thèmes
number of study units or observations included in a sample
to investigate how, where, or when something began by following evidence backward through time
to take a substance into a living organism or its tissues
the members of one species living within a particular area
to produce new organisms of the same biological kind
to grow, develop, or reproduce very successfully because conditions are suitable
connected with growing crops, raising farm animals, or the systems that support farming
the activity of growing crops and raising animals to supply food and other useful products
the condition of the air in relation to the pollutants it contains and their effects
the total greenhouse gas emissions associated with a person, product, organization, or activity, usually expressed as carbon dioxide equivalents
a lasting change in average weather patterns or their variability over decades or longer
the protection and careful management of natural resources, landscapes, and living things
to protect a resource by using it carefully and avoiding unnecessary loss or waste
the long-term loss of forest through conversion to another land use or failure of forest cover to recover
an extended period of unusually low rainfall or other water shortage that affects a region
to release gases or particles into the surrounding environment
the practice of reducing energy use and avoiding waste
to leave a dangerous place or move people from it to a safer location
a material added to soil or plants to provide nutrients needed for growth
the treatment of raw food materials to make them suitable for eating, storage, or sale
a condition in which people can reliably obtain enough safe, nutritious food to meet their needs and preferences for an active, healthy life
food that is discarded or left uneaten instead of being used for consumption
to predict future weather conditions using available observations and information
a fuel such as coal, oil, or natural gas formed from ancient organic material over geological time
the long-term rise in Earth's average surface temperature
a gas that absorbs and emits infrared radiation and therefore contributes to atmospheric warming
to gather a crop when it is ready to be used or sold
a period of unusually hot weather lasting several days or longer in a particular area
the organized supply of water to land or crops to support plant growth
a material or feature occurring in nature that people use to support life or economic activities
to protect a resource by using it carefully and avoiding unnecessary loss or waste
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