Answer: Leu (leucine)
Explanation: The mRNA code for a DNA strand of AAT is UUA. The amino acid that UUA codes for is Leu, short for leucine (I don't know if you need the full name of it).
Answer
The answer is A I think...
The correct answer is B. Oxygen.
Oxygen, as a part of the atmosphere, also participates in UV protection, besides being necessary for breathing.
The variable that researchers manipulate is the independent variable.
The reason for this is because in experiments different manipulations are often introduced. The sole purpose of these manipulations is to see whether they will affect our independent variable and if they will change its value.
Theories are educated guests that are tested by experiments
