Exam: Cambridge English: C1 Advanced (CAE)

Definition: A process where one thing changes to another and then returns to the first, or the repeated occurrence of different states or forms.

Example: The alternation of seasons is a natural phenomenon that occurs every year.

Definition: The condition of having different options or choices available, often used to describe situations where more than one possibility exists.

Example: The alternativeness of the solutions presented allowed for a more flexible approach to the problem.

Definition: The study and practice of measuring how high something is above a certain level, usually above sea level.

Example: Altimetry is crucial for understanding the Earth's topography.

Definition: This word describes something that is related to height above sea level or the distance from the ground.

Example: The altitudinal changes in the region affect the climate significantly.

Definition: This word describes something that is very high or tall, often used to refer to mountains or other elevated places.

Example: The altitudinous mountains towered over the valley, creating a breathtaking view.

Definition: This term describes young animals, especially birds, that are born in a very undeveloped state and need a lot of care and feeding from their parents after they are born.

Example: Altricial birds, such as robins, are born in a very immature state and depend on their parents for survival.

Definition: Showing a selfless concern for the well-being of others; caring about other people's needs and happiness.

Example: Her altruistic nature led her to volunteer at the shelter every weekend.

Definition: A type of chemical compound that includes aluminum as part of its structure, often combined with other elements or compounds.

Example: The aluminate in the mixture reacted with water to form a gel.

Definition: A type of mineral that contains both aluminum and silicon, often found in rocks and used in various industrial applications.

Example: Aluminosilicate minerals are important in the formation of clay and other geological materials.

Definition: This word describes something that is connected to or includes aluminum or alum, which are types of chemical elements or compounds.

Example: The aluminous minerals are essential for the production of aluminum.