Fill in the blank. 1. Minerals are substances with a fixed crystal structure and a unique chemical
composition
2. Processing ore sometimes involves or grinding minerals.
3. Prehistoric people used for knives and arrowheads.
4. The average American house contains about Mounds of minerals.
5. Early used rocks as simple tools as early as 2.6 million years ago.

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. 

It's called the falling actionwrong subject by the way

Answerrestate the main idea,essay or thesis, summarize the three subpoints of your essay, leave the reader with an interesting final impression;