Which feature is shown only by higher invertebrates, as compared to lower invertebrates?
bilateral symmetry
true coelom
three germ layers

What are the three different shapes or structures shapes or structure of carbon-based molecules?

As noted in the illustration, homo heidelbergensis was a tall, muscular hunter, who used both tools and weapons. because h. heidelbergensis was not a gatherer/forager, but ate a varied diet including meat and fish, we would expect to see what anatomical changes?

It andrew is staying in a primary sector economy, then which of these could be an important occupation in andrew's country?