* It is made of cells: Amoebas are single-celled organisms, but they are still cells with all the characteristics of life.
* It grows and reproduces: Amoebas can grow in size and reproduce through cell division.
* It responds to stimuli: Amoebas can sense and respond to changes in their environment, such as moving towards food or away from harmful substances.
* It has metabolism: Amoebas have a complex system of chemical reactions that keep them alive.
Abiotic factors are non-living components of the environment, such as rocks, water, or sunlight. Amoebas are clearly living organisms, so they are classified as biotic.