B. DNA is heated to separate strands
<span>First.PCR reaction</span>
Out of the choices given, the reason why Kathy's body feels sore and she has pain in her limbs after vigorously exercising is an accumulation of lactic acid in the muscles of her limbs. The correct answer is A.
The big bang theory states that the universe began approximately 10-20 billion years ago in an expansion of the universe emanating from an extremely compact point. The occurrence of super massive black holes contradict the big bang theory. Super massive black holes are found at the center of galaxies and is what keeps them together. Models do not explain how these would have formed if the big bang occurred the way it was proposed.
The answer 4 the above question sounds like a vitamin D deficiency.
Homeostasis refers to the body's ability to maintain certain things with
the body at the same level, this is demonstrated for example in
warm-blooded animals having a constant temperature.
