In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.
to use for the first time
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Select the word with the correct spelling.
Study of snakes
Constantly running system - program processes are known as
The outer most layer of the Sun is known as--
The corona is the outermost layer of the Sun, starting at about 1300 miles (2100 km) above the solar surface (the photosphere)
Minamata disease is a nervous disorder caused by eating fish, polluted with _____
The source of energy in an ecosystem is