<span>The vestibule of the ear has two ssensory chambers: the utricle and the saccule, and each contin a macula with the receptors for static equilibrium.</span>
Pretty sure it would be D because they’d all be Yy
The main idea is that microorganisms are small and they live everywhere possible.
The correct answer is a dichotomous key. Basically, you use the key to decide what species an organism is by looking at what traits it has, and if it doesn't have some traits you can instantly rule out a large number of species which brings you closer to your answer of what the species is that you're looking at.