Determining the weight of 100 CDs depends on whether only the CDs are weighed or if the CDs have sleeves or jewel cases. A single CD by itself weighs about 0.58 ounces. Therefore, 100 CDs by themselves weigh 58 ounces.
Plants and animals need nitrogen in order to make proteins. Proteins are essential compounds for healthy growth and fully functioning organisms. However, nitrogen is often in short supply to plants in both natural and agricultural systems. If nitrogen supply limits the growth of plants then the animals which feed on the plants will also suffer.
Why Do Plants Need Fertilizers. Along with moisture and sunlight, plants also need a variety of nutrients to survive. These nutrients can be gained from fertilizers that are necessary foods for plants apart from what they make through photosynthesis. As human beings need energy to work, plants also need nutrients to survive and work. Let us see some major reasons why plants require fertilizers. For nourishment and healthy growth. Plants need nourishment in order to grow and develop in a proper manner.