Hey there!
I believe the purpose of life is to just pursue your happiness and dreams.
The answer to this question is different for everyone, so I cant give you a definite answer, this is really a question that you yourself has to answer.
I hope I helped! :-)
Answer: D
Explanation:
A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction.
In choice D melting of sea ice opens more ocean to sunlight which causes more ice to melt which demonstrated a positive feedback loop.
The chemistry of the nitrogenous bases is really the key to the function of DNA. It allows something called complementary base pairing. You see, cytosine can form three hydrogen bonds with guanine, and adenine can form two hydrogen bonds with thymine.
