Macbeth is concerned about the blood on his hands because he couldn't believe that he had really killed King Duncan. He says that no amount of water could wash away the bloo â¦ d, because washing the blood away couldn't bring the King back.
5. What characteristic of soil is most important in determining water holding capacity? I think the soils actual composition is most important when determining water holding capacity. If you look at clay compared to sand, you would know that the tiny clay particles are very tightly packed together which allows very little water to pass through.
Water Availability. Key Points. Available water is the difference between field capacity which is the maximum amount of water the soil can hold and wilting point where the plant can no longer extract water from the soil. Water holding capacity is the total amount of water a soil can hold at field capacity. Sandy soils tend to have low water storage capacity. Sub-soil constraints (acidity, hardpans etc.) can prevent crops accessing water in the subsoil. Structure and depth of crop roots affects access to available water.