Question

does the following text have an inappropriate shift in verb tense? if so, fix any verbs that dont match the tense of the verb in bold. if not, submit the text without making any changes.
i recently learned that the periodic table lists elements in order of increasing atomic number, from left to right and top to bottom.

Explanation:

The verb "learned" is in the past tense. The verb "lists" is in the present tense. However, the periodic table's property of listing elements in order of increasing atomic number is a general truth. When reporting a general truth after a past - tense verb (like "learned"), it is acceptable to use the present tense for the general truth. So, there is no inappropriate shift in verb tense.

Answer:

I recently learned that the periodic table lists elements in order of increasing atomic number, from left to right and top to bottom.