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The deepest trench of the Indian Ocean is:
Tides in the sea have stored in them:
As one moves from the polar region towards equator the diversity of plant and animal species .
Who had used the term “Ecology” first time?
Which one of the following organisations is responsible for publishing topographical sheets?
Marble is the metamorphosed form of:
Which of the following statements is correct?
The constellation ‘Sapta Rishi’ is known to Westerners as the:
When the earth is at the maximum distance from the Sun, it is called:
Which one of the following is the correct sequence of ecosystem in the order of decreasing productivity?