Given a scientific question, generate a correct answer to it.
--------
Question: What is the term for the study of how living things interact with each other and with their environment?

Answer: ecology

Question: Skeletal muscle cells and cardiac muscle cells share what property, which is not shared by smooth muscle cells?

Answer: striations

Question: What is the study of macroscopic properties, atomic properties, and phenomena in chemical systems?

Answer:
physical chemistry