生物学
dinosaur
恐龙
, die out , extinction
灭绝
, paleontologist
古生物学家
, mammal
哺乳动物
, barnacle, underwater, marine
海洋的
, biology, scuba
水下呼吸器
, diving, one-celled organism, jellyfish, tissue, protective camouflage, predator
捕猎者
, biology, oceanic snail
蜗牛
, zoology, animal adaptation, wild environment, snake, owl, insecticide, coral, , blood cell, prenatal care
产后护理
, habitat
栖息地
, flat and angular shape, squid, tentacle, biologist, creature, electric fish, prey
捕食
, navigate, tiny receptor, transmission impulse, nerve, specimen
物种
amphibian
两栖类动物
decline in the number, wild life, genetic
基因的
endangered species
濒危物种
panda, crane, survival, transition, microbe, yeast, bacteria
细菌
single-cell, structure, cold-blooded, warm-blooded, adjust, reptile
爬行类动物
turtle, lay eggs, hatch
孵化
incubation, hibernate
nest, robin, wasp, offspring
子孙 stinger, chew up, rodent
burro
evolution, sea life, octopus
章鱼
shell, spider, unfertilized eggs, nutrient, nourishment feed, survive, cannibalism
同类相食
gene
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