Sentence:  In the other hemisphere it is growing colder and nymphs , those who stayed alive through the summer , are being brought into nests for quickening and more <WSD>growing</WSD> '' . 
Meaning of the word marked with <WSD> tags:  (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level