Related by context. Frequent words. (Click for all words.) 60 sequoias 58 coniferous forests 57 conifer forests 56 arid climates 56 lichens 56 longleaf pines 55 lava tubes 55 hickories 55 montane 55 forest canopy 55 aspen trees 55 aspens 55 redwood forest 55 agaves 54 coniferous trees 54 conifers 54 temperate forests 54 alpine meadows 54 columbines 54 barrens 54 Sea otters 54 flowering plants 53 cypress swamps 53 herbaceous perennials 53 plesiosaurs 53 aspen stands 53 lupines 53 cacao trees 53 evergreen forests 53 giant sequoias 53 ceanothus 53 forest canopies 52 ant colonies 52 sparse vegetation 52 echidnas 52 Ponderosa pines 52 orchid species 52 lowland forests 52 Migrating birds 52 fruiting bodies 52 carnivorous plants 52 wildflower meadows 52 beeches 52 Amazonian rainforest 52 beech trees 52 jack pine 52 Southern Appalachians 52 lichen 52 species 52 alkaline soils 52 californica 51 Rhododendrons 51 Chihuahuan Desert 51 forbs 51 redwoods 51 hemlocks 51 goshawks 51 angiosperms 51 deciduous forests 51 freshwater ponds 51 acacias 51 platypuses 51 adelgids 51 junipers 51 saber toothed tigers 51 Pinus 51 crocodilians 51 grassy plains 51 pronghorns 51 Namib Desert 51 giant sequoia 51 temperate zones 51 Invasive plants 51 hemlock trees 50 lowland gorillas 50 trilliums 50 ferns 50 timberline 50 temperate rainforest 50 subtropical climate 50 edible mushrooms 50 bipeds 50 ponderosa pines 50 eucalypts 50 red cedars 50 yuccas 50 viburnums 50 hornbills 50 tree ferns 50 tropical rainforests 50 heaths 50 oak hickory 50 Galápagos 50 primeval forest 50 hardwood forests 50 euphorbia 50 multicellular organisms 50 Bighorn sheep 50 ecosystems 50 African savanna 50 cottonwood