1. the organized set of procedures used to solve a problem or answer a question is called the scientific method experiment 2. how many variables are tested in any controlled experiment? one two three 3. is measured on a balance in grams.

the sphincter muscles at the end of the digestive tract is the anus.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy

the dark variety, as they are not visible on the dark tree barks

explanation: