OK so when you make a chart you want to put what you want in there
10---30---60--- and so forth makeing a graph as what you need to succeed in school like in your grade book thats a graph.
so what your tryng to find is how much sickness is in your graph so afte meication there is veary few symtoms of the disiese .
No because they are so far away you could never get close enoughe to one, at least not today!
Answer:
Natural air pollutants include radon, fog and mist, ozone, ash, soot, salt spray, and volcanic and combustion gases.
the purpose of valves in the heart valves is to allow blood to flow only in one direction. Valves open and close on differential pressure on each side. pulmonary and the aortic valves receive blood from the ventricles and their semilunar valves allow blood to go into the arteries and prevent back flow from the artery to the ventricles.
The correct answer would be D. Mollusca.
The question is basically describing a snail.
Arthropoda have segmented bodies.
Echinodermata(starfishes, sand dollars etc.) are radially symmetrical.
Also none of them have shells except phylum Mollusca :)