It helps if you place the seeds with their grooved side upwards. Wet the cotton wool in both cups and put in a light place. Keep the seeds moist - you could cover the cups with clear plastic wrap to prevent the seeds from drying out. Within four or five days, the seeds should begin to grow. Observe the seeds growing for a few more days.
Salts occur naturally in the soil and are carried by water.
If the underground water level is close to the surface, the soil becomes too salty for many plants to grow. Tree planting programs can help reduce this problem. Explore more Experiment with different amounts of salt to find out how much will stop wheat from growing. Try putting salt on the wheat seeds after they have sprouted. Try growing different types of seeds.