Why do we call meteors shooting stars?

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.