Which of the following is correct
$99\% $ of existed species are extinct
$25\%$ of existed species are extinct
$40\%$ of existed species are extinct
$30\% $ of existed species are extinct
It’s obvious.
Which one of the following correctly represents an organism and its ecological niche
Interspecific interaction could be
Reproductive isolation between segments of a single population is termed as
The term ‘biocoenosis’ was proposed by
Which of the following isolation is important for speciation
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