Given a scientific question, generate a correct answer to it.

Input: Consider Input: What type of lines run next to each other?

Output: contour lines

Input: Consider Input: The properties of the alkali metals are similar to each other as expected for elements in the same what?

Output: family

Input: Consider Input: Life span is distinct from what, which means the sequence of stages a plant goes through from seed germination to seed production of the mature plant?
Output: life cycle