Related by context. Frequent words. (Click for all words.) 43 altitudes 42 altitude 40 temperate zones 39 mandibles 39 pectoral fins 39 footpads 39 forelimbs 39 collagen fibers 39 whorls 38 jungle canopy 38 wattles 38 spines 37 subtropics 37 radially 37 globular 37 cirrus clouds 37 hairs 37 prickles 36 Nerve cells 36 striated 36 equatorial regions 36 -# degrees Fahrenheit [002] 36 palms 36 abraded 36 pelvic bones 36 aerosol particles 36 bones 36 Relative humidity 36 pelvises 36 rhizomes 36 towering peaks 36 updrafts 36 ridges 35 stippled 35 muscle fibers 35 roundish 35 nubs 35 muscles tendons 35 quills 35 mountainsides 35 upright posture 35 mountainous regions 35 timberline 35 protrusions 34 warmer climates 34 mid latitudes 34 temperature gradient 34 sepals 34 prickle 34 wingspans 34 mountainous terrain 34 canine teeth 34 leathery 34 swellings 34 curvatures 34 hind limbs 34 tail feathers 34 Andes mountains 34 foreheads 34 latitudes 34 red ocher 34 beaks 34 anatomical structures 33 exoskeletons 33 Andes Mountains 33 hip joints 33 sweat glands 33 -# ° C [001] 33 abdomens 33 knobby 33 capillaries 33 reddened 33 visible wavelengths 33 diameter 33 tree trunks 33 temperate regions 33 VO2max 33 cumulus clouds 33 helicopter rotors 33 sickle shaped 33 circumference 33 mountains 33 supersonic speeds 33 plateaus 33 distances 32 dense vegetation 32 colder climates 32 exhalations 32 northern latitudes 32 uneven terrain 32 twiggy 32 muscle tissue 32 fleshy 32 subtropical regions 32 fibrous 32 flagella 32 Tibetan Plateau 32 skulls 32 elevations 32 internal organs 32 soles