None of these is the correct answer.
<span>The cranium of Homo erectus has a pentagonal shape when viewed from behind. The face of H.erectus was large with a low, forehead and a massive brow ridge. </span> <span>Skull was long with sharp angles at the rear, which is different than the skull in modern humans. Bones of the skull were very thick and formed a small central ridge called midline keel.</span>
I like 4 the best. If an organism is covered by sediment before the body decays the sediment can harden around the decaying body and the imprint will be preserved in the hardened sediment.
The crust is the outermost layer of the planet
False.
Digital activism is use of digital/electronic technology to communicate several activist movements. It is seen when activists, suporters of some kind of activist movement, use technology to spread their ideas, make some statement known, or target someone or something. It can be used social media, e-mail, blogs, etc.