According to grace's letter what problems did people living in the Dust bowl encounter?

Is it possible to have a sense of depth without a sense of volume? What would the world be like without the sanitation department? What is the atomic letter for mercury and silver? What are the colors of Mercury? What is the Theory of modern synthesis? How do scientist know that the people fanned out across north America and south into Mexico and central and south America? What do chunks of contenintal glaciers produce when they break off the edge of a ice sheet? What are the disadvantages of an oil fired power station over a tidal power station? Why the hunters have to find new ways to get food when Earth's climate began to get warmer? Uniform electric and magnetic fields are acting along the same direction in certain regionIf electron is projected along direction of fields with certain velocity then wats the motion of electron? How many feet are there in 950 meters? How do people defecate? How do elements of talking help us to communicate better? How many watts is a titan hifonics txi4406 4x110? What will happen if you touch Saturn's rings? How are electrons organized? What are Amino acids also known as? Why does the wick in my scented candle burn fast and the wax builds up the sides and makes a big hollow in centre of andle leaving hardly any wick? What intermolecular force attacks two nonpolar molecules to each other? What is a substance whose atoms all contain the same number of protons and electrons?