SO GUYS I HAVE A QUESTION The graph below shows grain production in a village in Africa over a 40-year period.

Over the years, land used for grain production in this village has been subjected to aggressive farming practices such as over-watering and plowing. How have these activities most likely affected the land?
A.
The total volume of soil has increased.
B.
The fertility of the soil has increased.
C.
The rate of soil erosion has increased.
D.
The rate of soil formation has increased.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.