How does biologist define life, and what were the origins of life?

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?

The transport tubes from food came down the plant are called?

What maintain homeostasis when a persons internal body temperature is 97.5°f