In photosynthesis, the plant uses water and nutrients from the soil, and carbon dioxide from the air with the sunâs energy to create photosynthates. Oxygen is releases as a byproduct. Figure 2.thletes take up oxygen through their lungs. Plants take up oxygen through the stomata in their leaves and through their roots. Again, respiration is the burning of photosynthates for energy to grow and to do the internal âworkâ of living.
Seeding a New Lawn. The process of applying seed for a new lawn is the same for most applications, but preparation may be limited to raking and fertilizing. Prices for seeding new lawns across the country reflect variations in lot size and preparation requirements, but typically range from $400 to $800.
Ryegrass takes about 10 pounds for a new lawn and 5 pounds for an existing lawn. Grass is available in small 3- to 7-pound bags aimed at patching lawns to 20-pound bags for completely re-doing a lawn. The cost depends on size and type. A 3-pound bag of sun and shade mixture cost about $15.00. A 7-pound bag of Kentucky Bluegrass costs about $40.00. A 20-pound bag of Northeast grass seed (a mixture of species hardy for the temperature and suitable for a general use lawn) costs about $75.00.