Which are characteristics of scientific questions? check all that apply.

A good scientific question has certain characteristics. It should have some answers (real answers), should be testable (i.e. can be tested by someone through an experiment or measurements), leads to a hypothesis that is falsifiable (means it should generate a hypothesis that can be shown to fail), etc.

Explanation:

Good scientific questions need to be focused and must have clear answers that can be found through testing two variables, the independent and the dependent variable. Good scientific questions usually avoid starting with "why" and focus more on the "how" or "what". For example, the question "Why do humans exist?" is not a good scientific question because it cannot be clearly tested. The question, "How did the divergence from apes create humans through natural selection?" is a better question because it is testable and focuses on one specific aspect of our lineage.

i'd say that the moon rock is about 2.2 billion years old.