aha aw thank you!! 
and for questions
a)name the 4 chambers of the heart?
b)what is the closest galaxy to us?
c)how many light years across is our galaxy?
d) what is a force?
Hopefully these are right!

a) The left atrium, left ventricle, right atrium, right ventricle
b) The andromeda galaxy (Trying to recall from a documentry from ages ago

)
c) 20 million light years (Guess haha)
d) Something that has the power to move something in a certain direction. The amount of force is dictated by F=MA, which implies that force is proportional to the mass and acceleration of an object
I'll give a few as well:
#1 - What is magnetic induction?
#2 - What is cohesion?
#3 - What is a guard cell?
#4 - How is oxygen released as a byproduct of photosynthesis
#5 - If I walk 20 metres North, and 20 metres South, what is my total displacement?