____ tissue changes the diameter of a blood vessel.
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Name the noble gas which is placed in the third period and eighth group of the Modern Periodic table.
How many groups and periods are present in the Modern Periodic Table?
Which one of the following bio reserves of India is not included in the World Network of Biosphere Reserve?
What is the name of the acid in an ant's sting?
Cannis Familiaris is the scientific name of
An _______________ is a sudden shaking or trembling of the earth.
A deep crack in a glacier is called