BRAINLIST!! A grassland region has been converted to farmland and ranches. Between crop harvests, some farmers plant a cover crop, while other farmers do not. How do these practices affect the soil of the grassland?

A.
Planting a cover crop or leaving the ground bare are both practices that will completely prevent soil erosion.
B.
More erosion by wind and runoff will occur on farms with cover crops than on farms without cover crops.
C.
Less erosion by wind and runoff will occur on farms with cover crops than on farms without cover crops.
D.
Equal amounts of erosion by wind and runoff will occur on farms, regardless of whether cover crops are planted.

Find the mass in grams of 1.37x1020 particles of h3po4

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

What is the independent variable in this investigation? mass volume sample number substance density