The source of the animals food
Answer:
C
Explanation:
The helix has to unwind before separating. Once it's separated, then new bases can be added. Once the bases are added, the separate strands wind into helices.
The answer is C. The widely used technique for finding extraterrestrial life is use of SETI (search for extraterrestrial intelligence) dishes that listen for radio waves from outer space. NASA has also been sending radio waves to outer space with messages that could purportedly be decoded by alien intelligent life.
Black for the first,
Brown for the second,
And,
White for the third.
Hope that his helps you..