A.) sexual phenotypic traits
<span>The answer is valid data. A scientific argument utilizes confirmation to present a defense for whether a logical thought is precise or erroneous. The desires created by a logical thought and the genuine perceptions significant to those desires from what we'll call a logical contention.</span>
answer: proterozoic eon
Explanation: they found an abundant amount of fossils around 1.8 billion years ago, this would be called the proterozoic eon
