The pH scale measures the concentration of how acidic or basic something is. The lower the number below 7, is acidic. Above 7 is basic. 7 is waters purest form.
Humans can make a difference but carbon is everywhere. This generation has the largest carbon footprint yet.
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.
Answer:
Open circulatory system:
Relies on the heart to keep blood flowing
Used in all vertebrates
Sorry thats all i know :)
