Question

Maintaining internal conditions within in an organism is a characteristic of life known as _____.

Answer 1

Maintaining internal conditions within an organism, especially when outside conditions change is called homeostasis. 
In Latin, the word homo/homeo means the same, and stasis means state/condition. 

Answer 2

Answer:

homeostasis.

Explanation:

All living organism on this planet have the ability to change or regulate the environmental conditions with in their bodies that keeps them and their body in a stable positions irrespective of the changing  external environment. This mechanism of regulation is known as homeostasis.

For example - we start shivering , when our body faces a temperature lower than the normal room temperature to maintain constant internal temperature for proper functioning of internal organs and systems.