D. have there been any historic examples of a collision with an neo? if so, when and where? (note that historic in this context refers to human recorded history) (1 points)

e. is there any evidence that a large neo collided with the earth at any time in its history? if so, when and where was this impact event, and what were the consequences for the inhabitants of the planet at the time? (2 points)

f. in june of 2012, asteroid 2012 lz1 passed fairly close to the earth (in astronomical terms). although it is was not a threat to earth, after it passed, two serious issues were raised concerning the asteroid's discovery and size. use the search engine of your choice to find out about these issues (note that it is important to look for articles published after the asteroid passed). what are these two serious issues? (2 points)