There were no regulations in the meatpacking industry, they were paid poorly and there were no repercussions in acting as they did.
A contract would fit that definition.
It's b because it's that hope I help
Answer:
Transportation of essential gases an nutrients, waste and unwanted products
Explanation:
the key feature of circulation is transportation of essential gases and nutrients around the body of an organism, removes unwanted products of metabolism from the tissues, and carries these products to specialized excretory organs, if present.
