The answer is : randomization was not used in sample selection. The major difference between experimental and quasi-experimental designs is lack of randomization in sampling selection.
Yes
None of them produce their own energy
The body size overestimation is most consistent characteristics with anorexia nervosa. The anorexia nervosa is a mental and perhaps life-threatening eating condition distinct by an very low body weight comparative to stature in which this is called body mass index and is a role of an individual height and weight, risky and unnecessary weight loss, irrational fear of weight gains and misleading awareness of self-perception and body. The person who undergo from anorexia nervosa demonstrate an obsession with a thin figure and unusual eating patterns and is interchangeable with the term anorexia which talk about to self-starvation and deficiency of appetite.
The best answer to fill in the blank is "multilayered membrane."
Answer:
a solution that has a pH equal to 2 will have 10^10 more hydronium ions that hydroxide ions