Habitat
robot
We call such past organism "extinct".
carnivor
No, you can call them an organism.
You would call such an organism a carrier.
We call these consumers.
mosquito
when a organism is helped or harmed you call it a parasite
We call anything that is alive an organism.
An organism that eats another organism is called a consumer.
We call this process an autoimmune reaction.
Niche