Which of these is an example of an engineering solution?

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

Which elements are found in glucose, the product of photosynthesis? a. carbon, hydrogen, and oxygen b. carbon and hydrogen c. carbon, nitrogen, and oxygen d. hydrogen, nitrogen, and carbon

Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas