I need help with a few of these questions, and will provide FG if I am helped by you! This is a college class, so I need specific/detailed responses.

Give evidence for a large impactor at some point in every planet's history.

Why is Moon so important to life on Earth?

2015 is going to be an exciting year for astronomy. Why?

Excluding Phobos and Deimos, discuss why Earth is the only terrestrial planet with a moon.

Gulf of mexico (theorized meteor that wiped out the dinos)

tides

http://www.seasky.org/astronomy/astronomy-calendar-2015.html there is a lot going on

no idea

2015?
http://listverse.com/2012/04/27/10-upcoming-astronomical-events-worth-seeing/