Hello! i have a question and i ask if you can make it a bit detailed. i am struggling to understand the calvin cycle in the process of photosynthesis. can someone !

Absolutely!  The Calvin Cycle is a process that takes place within the stroma of chloroplasts during photosynthesis.  This cycle is a light-independent reaction because it does not need sunlight to fully develop.  The process is, however, dependent on ATP and NADHP from those light reactions.

If you want a really good study guide for the Calvin Cycle, just follow this link; it helps A LOT!

https://www.khanacademy.org/science/biology/photosynthesis-in-plants/the-calvin-cycle-reactions/a/calvin-cycle

Hope this helps!! :)

the answer is c) an oak tree

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.