How do you know that an object in space is moving through the sky?

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

What is thought to have caused the mass extinction at the end of the cretaceous period?

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis