Question

Ambhibians ___ the first four limbed vertebrates.?
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Answer 1

Tetrapods are four-limbed animals constituting the superclass Tetrapoda.

Amniote tetrapods began to dominate and drove most amphibian tetrapods to extinction.

Answer 2

The answer is 'are.'

Amphibians are the first four-limbed vertebrates.

• In the given sentence, we need to fill in the blanks with the correct form of the verb.

• Since the sentence is a general fact, we need to use a simple present tense.

• The subject, 'amphibians,' is plural. Therefore, we use the plural verb 'are.'

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