One difference between opening day in the house and opening day in the senate is that
a. new members must be sworn-in to the senate.
b. committee members are appointed in the house.
c. the house must reorganize but not the senate.
d. the senate reorganizes, but not the house.

answer; i believe that the correct answer is (behavioristic)good luck

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.