Which of these processes indicates that smelting copper is a chemical change?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Why is the structure of molecule important to its function?

Which type of fossil does this image depict?