Which body system works with your digestive system to push your food along through your intestines?

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

Which set of terms best describes a community of miners who live out in the countryside of west virginia and use specialized geographical equipment to analyze the composition of rocks