Which statements describe functions of the backbone? Check all that apply. It supports the body’s weight.
It helps to break down food.
It surrounds and protects the brain.
It replaces the spinal cord in vertebrates.
It allows for flexibility and movement.
It helps regulates water balance.

1 and 5

Explanation:

i got it right on edge! if thats not your answer I'm sorry :)

1. It supports the body’s weight.

5. It allows for flexibility and movement.

Explanation:

Just did it, have a good day!

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.