The answer is B i believe you’re welcome
Constant variables are variables that are kept the same in all groups during an experiment.
The correct answer is rheumatism.
<span>Rheumatism refers to all the conditions that cause chronic pain affecting the joints and/or connective tissue. It is not the term that describes any specific disorder, but it covers many different conditions such as capsulitis, back pain, neck pain, osteoarthritis. The study of this disorders is called rheumatology.</span>
Option C - They show that the number of atoms of each element is the same in the products and reactants.
The conservation of mass essentially states that no matter can be created or destroyed. It is because of the conservation of mass that we have to balance chemical equations in order to ensure than no atoms are destroyed or created.
-T.B.
