The Permian period, during which the first most modern orders of insects appeared, occurred approximately
$80\; million$ years ago
$150\; million$ years ago
$280\; million$ years ago
$550\; million$ years ago
The first cellular form of life could have originated
Did aquatic life forms get fossilised ? If, yes where do we come across such fossils ?
The last major evolutionary advancement among the vascular plants was the emergence of flowering plants (angiosperms) about
Which era is called the age of angiosperms?
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