25 !
how do capillaries differ in structure from arteries and veins?

a. capillaries have smoother muscle tissue than veins.
b. capillaries appear to have a larger diameter than veins
c. capillaries have valves which are absent in arteries.
d. capillaries are only one cell thick and lack smooth muscle.

Ihave a really high metabolism and only weigh 70 pounds (13 almost 14). people always ask me two questions: do you ever eat and how do you eat so much and stay so skinny.i am worried that a high metabolism wont me forever. what are some safe steps i can take to maintain being fit. (also, i already work out i am a dancer so i get cardio a lot)

What should you sprinkle on cut fruits to slow the browning process? a.oil b. lemon juice or acids c.salt d.melted butter

Chicken nuggets. eggplant. ice cream. cats. none of the above . all of the obove. btw it days include