An artery is constricted at one location to 1/2 its normal cross-sectional area. how does the speed of blood past the constriction compare to the speed of blood flow in the rest of the artery? (note: assume ideal fluid flow.)

Speed of blood past the constriction becomes two times the speed of blood flow in the rest of the artery.

Explanation:

For an ideal fluid flow condition, the equation of continuity is applicable which means that the flow of any fluid at a given point of time at two different cross section remains same at constant density

Thus,

Substituting the given values in above equation, we get -

Thus, speed of blood past the constriction becomes two times the speed of blood flow in the rest of the artery.

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.