I think the answer is the Endoplasmic Reticulum
Explanation:
info gathered b4 and after an experiment is used to confirm or disprove a hypothesis ( educated guess).
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).
Natural selection gets rid of those who are unfit of surviving and allows those who can survive to reproduce and live on
Answer:
Plants in the desert are succulent because they need to hold as store a lot of moisture
