Astudent made the following observations about astronomical bodies. observation 1: the sun rises and sets. observation 2: the stars move daily across the sky. which observation(s) can be explained using the geocentric model? a. only observation 1 b. only observation 2 c. both observation 1 and observation 2 d. neither observation 1 nor observation 2

Option C, Both observation 1 and observation 2

Explanation:

As per the geocentric model, the earth lies at the center of the Universe and all planets, sun, stars and other celestial bodies rotate around the earth.  

It was believed by the people of those days that the sun rotates around the earth  and completes its one rotation in one day. Thus the part of earth which faces the sun, seems to have sunrise while the other part will have the sunset.

Hence, option C is correct.  

[content deleted] - user123802726recklesschicken

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.