Identify each statement as a hypothesis, theory , or law. for any closed system, the mass of the system must remain constant over time. higher air pressure causes fuel to burn at a faster rate. organisms have changed and diversified over time due to shifting frequencies of heritable traits by means of natural selection.

A hypothesis refers to a proposed illustration or supposition made on the basis of confined proof as an initiation point for further examination. A theory refers to a collection of associated concepts that are intended to explain something. While in the field of science, the law refers to a generalized rule to illustrate a body of observations. A scientific law demonstrates a cause and effect among the observed elements, and must always be applicable under similar conditions.

For any closed system, the mass of the system must stay same over time signifies law.  

Higher air pressure causes fuel to burn at a faster rate is a hypothesis.  

The organisms have diversified and changed with time because of the shifting of frequencies of heritable traits by means of natural selection signifies a theory.  

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.