Aerifying larger lawns requires a power-driven core aerator or aerifier, which can be rented at lawn and garden supply centers. The working parts of these machines are spoon-shaped tines or hollow tubes. As the tubes are driven into the lawn, cores of soil are removed from the ground and strewn across the lawn.
Nutrients with the Highest Energy Density. Fat provides more calories than any other nutrient. The macronutrients -- fat, protein and carbohydrates -- are high in energy density, which means that they have 4 or more calories per gram. The other essential nutrients -- water, vitamins and minerals -- have no calories, so they provide no energy.
Top 10 (Riboflavin) Vitamin B2 Rich Foods. Riboflavin or Vitamin B2 is also a water-soluble vitamin involved in energy metabolism. It helps the body utilize the other B-vitamins all of which assist with helping our body use energy from food. It may also help protect cells from oxidative damage. Generally, riboflavin and thiamine deficiencies are seen together.