The tail of fish is important to control its
Underneath hair of polar bear, the color of his skin is
Bears have sharp teeth to kill
Deciduous trees are the trees that shed
The energy at each trophic level is transformed to the next level is only
Small mammals like mice, rats and rabbits come out in night to avoid
To adopt the natural ways for survival, is known as
Most of the flowers open in daylight so that
Polar animals live in
The feces and dead waste are food for
As the winter approaches, many plants
In winter, some birds move to warmer places where there is more food, this is called
Many animals in the desert hide themselves during day, to get rid of
Food chains and food webs always start with a
'Moles' feed on
If the color of an insect is green, it has
To keep the fish floating in water, it requires
To swim through water easily, fish have
Leaves of cactus are like small spines to
When plants and animals die, they are decomposed by
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