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.
(Image: NASA-MODIS/Aqua). Plants need nitrogen to grow. Plants are not able to use the nitrogen that is in the atmosphere for this, even though there is tons of it available. Itâs just not in a form that plants can use. So they get the nitrogen they need from the soil where bacteria have converted it into a usable form.he Changing Nitrogen Cycle. Look up into the sky and you look through millions of air molecules, eighty percent of which are nitrogen molecules-two atoms of nitrogen bonded together. Nitrogen is found all over the planet, not just in the sky. It is in living things, air, water, even animal waste.