What criteria do we use to decide whether something is alive?
Answers
Answer:
We decide whether something is alive by its adaptability to the environment for better survival chance. The various body processes, like the metabolism and catabolism.
A thing which is alive must go through the process of
- respiration- be it aerobic or anaerobic.
- nutrition- a living thing cannot survive without nutrition; all living things need food to survive.
- excrete out unwanted and toxic substances.
- Growth - This is the process by which the nutrition is used in the permanent increase in the number of cells and size of the organism.
- Stimulus- They need to respond to the change in surroundings.
- have the urge to reproduce- for the continuation of species.
Anyway life can't be understood by any means. Life is unique. Smallest living thing- cell but it is formed of non living things like organelles. Organelles are formed by proteins. Protiens comprise of molecules. The very same molecules which make up everything else.
Hope it helps...please mark as brainliest.
Explanation:
Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. However, a living organism can also have movements, which are not visible to the naked eye.