Question

the lining of the stomach and the muscle it sits on work together to physically and chemically break down food. the lining of the stomach and the muscle it sits on are examples of which together form the called the stomach. cells tissues organs organ systems

Explanation:

Tissues are groups of similar cells that work together to perform a specific function. The lining of the stomach and the muscle are different types of tissues that combine to form the stomach organ.

Answer:

First blank: tissues
Second blank: organ