The sentence provided is a run on sentence.
The sentence speaks of two different topics in one sentence, this should be two separate sentences.
Answer:
In addition to
Explanation:
This is because they are saying
as well as their occasional selfishness, and saying they are capable of being nice as well
Stars are glowing balls of gas that erupt at times.
Europe is an existing place to visit, it is of historical landmarks.
Visit Europe it is an existing place to full of historical landmarks.
It helps us see what they used to since some cave paintings would show them doing stuff so it would tell us what the world was like way back then