7 A bug walks exactly halfway around the edge of a circular cupcake with a diameter of 5 cm.
distance =
displacement -
8.
A swimmer swims a half lap, moving from the left end to the right end of a pool that is 50 meters long
distance =
displacement
9.
A swimmer swims an entire lap, moving from the left end to the right end and back again to the left end in a pool
that is 50 meters long
distance =
displacement =

answer; /// i believe that the correct answer is (50%);

answer; i believe the correct answer is (a)0

a community that experiences major changes undergoes progress

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.