in which circumstance is displacement the same as distance traveled?

a an object travels in a straight line, then comes to rest

b an object moves left and right as it travels forward

c an object returns to its initial point of departure

d an object makes a right-hand turn midway in its trajectory

"d.) carbon dioxide and hydrogen sulfide"

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.