Photosynthesis and cellular respiration project

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.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?