Bacteria in a person's digestive system feeds and breaks down the food, which the person is then able to absorb. What type of symbiotic relationship is described?

8

explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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i believe the answer is a.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.