Answer: The exclusion of microbes, such as bacteria and spores.
Explanation:
The swan-neck flask broth was able to remain sterile because the "dips" of the flask's neck acted as a reservoir to contain microbes that managed to get in through the open mouth.
Your urinary system filters your blood to get rid of what your body doesn't need. It eliminates extra water and salt, toxins, and other waste products.
Different components of a mixture have different properties on the basis of which we device the method that is used to separate it from other components of the mixture
