_______ is the study of the physical form and external structure of plants.
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A ________________ is known by different names in different parts of the world. It is called a ‘hurricane’ in North America.
A deep crack in a glacier is called
_____________ is the number of deaths in the population during a given period.
Living things constitute the biotic component of the ___________________.
Halophytes are plants that grow in
Ornithophily is effected by
A school always has a