Albedo is a measurement term used by astronomers of the amount of sunlight reflected by a planetary surface.
Algae fibre is photosynthetic organisms that use sunlight to make oxygen and organic.
Alienation is a term used to describe the domination of humans by their own products – material, political, and ideological
Alienation (human) graphics
Alkaline battery is the most common single-use (primary) battery, got its name so because it uses a paste of KOH as the electrolyte. Alkaline earth metals.