Food is able to move down your esophagus by a wave of relaxing and contracting. this is called?

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees