Because most but not all 13 yrs olds and older smoke already and they just want to know if you have already smoked before
It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. Varicose veins seen in the superficial veins of the legs are unsightly and often treated by surgically removing them. however, even without these veins being present, the return of all blood toward the heart from the legs is not diminished primarily because <span>blood can still return via the deep veins. Hope this helps.</span>
Answer:
Asexual and Sexual reproduction.
Explanation:
Reproduction can either have one or two parents. Based on this there is two types of reproduction:
Asexual: A type of reproduction where a single parent is divided by itself and reproduce its offspring.
Sexual: A process where two parents participate in producing their offspring.
Isotonic, Hypotonic, and Hypertonic Solutions. Water moves readily across cell membranes through special protein-lined channels, and if the total concentration of all dissolved solutes is not equal on both sides, there will be net movement of water molecules into or out of the cell.
