Nitrogen compounds are often used as fertilizers to increase plant growth. sometimes there is much more nitrogen than plants need. what happens to most of this excess nitrogen?

What best describes the dropping height of a ball that bounces back up to a height of 45 cm

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.