Suppose it takes 500 years to form 2 cm of new soil without erosion. of a farmer need at least 35 cm of soil to plant a particular crop, how many years will the farmer need to wait before planting his or her crop? show how you get to the answer.?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.