Related by context. Frequent words. (Click for all words.) 75 photosynthesize 65 nitrogen fixing 63 seeds germinate 63 photosynthesis 62 atmospheric nitrogen 61 acidify 61 absorb nutrients 61 alkaline soil 60 woody stems 60 reproduce asexually 60 mycelium 59 chlorophyll 58 zooxanthellae 58 chloroplasts 58 unicellular 58 organisms 58 rotifers 57 evenly moist 57 symbionts 57 shade tolerant 57 herbaceous plants 57 forbs 57 photosynthetic 57 acidic soils 57 Cyanobacteria 57 phloem 57 absorb carbon dioxide 57 fungal spores 57 corm 57 crop residues 57 flower stalk 57 phytoplankton blooms 56 microorganisms 56 woody plants 56 nitrogen fixation 56 diatoms 56 rebloom 56 Aphids 56 Phytoplankton 56 herbaceous perennials 56 nutrients 56 insect larvae 55 Fruit flies 55 filter feeders 55 metabolise 55 fungi 55 organism 55 moist soil 55 perennial grasses 55 fish emulsion 55 alga 55 compost heaps 55 nutrient uptake 55 weed seeds 55 monocultures 55 nutrient rich 55 insects 55 desiccation 55 drained soils 54 stomata 54 self pollinating 54 Fertilizing 54 methanogens 54 pollinating insects 54 phytoplankton 54 microbes 54 micro organisms 54 Nematodes 54 bagworms 54 Bt toxin 54 microscopic algae 54 bioenergy crops 54 mosses 54 unfertilized 54 attract hummingbirds 53 Photosynthesis 53 understory 53 defoliate 53 grasses 53 lichens 53 acidic soil 53 absorbing carbon dioxide 53 pest insects 53 overgrow 53 Dust mites 53 Anthocyanins 53 whiteflies 53 cyanobacteria 53 salt tolerant 53 bacteria fungi 53 plankton blooms 53 germinates 53 hydroponically 53 temperate zones 53 asparagine 53 deciduous trees 53 corms 53 single celled organisms 53 microscopic organisms 53 overwintered 52 mycobacteria