1. What is needed for a sound wave to travel? 2. What would be the most likely effect on hearing if the hammer, anvil, and stirrup could only vibrate a little bit?

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.