Https://www. yumpu. com/en/document/read/4087078/questi ons-1-through-4-refer-to-the-follow ing-earth-science-review i need help with all of questions 1-39

your best option is 5,000 kg

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.