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upper covering formed by a plant community's leaves
叶冠层；树叶形成的上层覆盖
successive stages in an organism's development and reproduction
生命周期；生活史
animal of the class whose females produce milk
哺乳动物
join with another animal for sexual reproduction
交配
transformation from an immature form into a different adult form
变态发育
organism too small to see without magnification
微生物
move regularly between habitats or regions
迁徙
regular seasonal movement between habitats
动物迁徙
made up of many cells
多细胞的
change in an organism's DNA sequence
突变；DNA 序列变化
species occurring naturally in a particular area
本地物种；原生物种
spread of advantageous inherited traits
自然选择
sweet plant secretion that attracts feeding animals
花蜜；植物分泌的甜液
active mainly during the night
夜行性的；主要在夜间活动的
cell structure containing most genetic material
细胞核
circulation of nutrients through organisms and their surroundings
养分循环；营养物质循环
young produced by an organism
后代；幼体
animal that eats both plant and animal food
杂食动物
individual living thing
生物；有机体
organism that obtains resources from and harms a host
寄生生物；寄生虫
use of light energy to produce sugars
光合作用
fine grains involved in seed-plant reproduction
花粉
transfer pollen so a flower can be fertilized
给……授粉；传粉
transfer of pollen enabling fertilization
授粉；传粉
number of organisms within a unit of space
种群密度；人口密度
animal that captures other animals for food
捕食者；捕食性动物
animal or animals hunted and eaten by a predator
猎物；被捕食的动物
gene variant whose trait effect is masked by a dominant variant
隐性等位基因
free nutrients for use by other organisms
释放养分
produce new individuals of the same kind
（生物）繁殖；产生后代
Biologia, evoluzione ed ecologia / Ecosystems
animal that eats both plant and animal food
杂食动物
Definizione in inglese
an animal that eats both plant material and other animals
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