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 need nitrates to develop green leaves. Nitrogen, potassium and phosphorus are the three major nutrients plants need to grow successfully. In particular, nitrogen is responsible for foliage development. Plants use nitrogen in the form of nitrates, which is nitrogen mixed with oxygen. They usually absorb nitrates from the soil.
The carbon in these mineral deposits remains locked up until it is released to the atmosphere as carbon dioxide when fossil fuels are extracted and burned. Nitrogen Cycle: Organisms require nitrogen in various chemical forms to make proteins and genetically important nucleic acids such as DNA. Klost green plants need nitrogen in the form of nitrate ions (NO,-) and ammonium ions (NH4 +).