"Mechanical" would be the kind of reproductive isolation among the choices given in the question that has been observed in these two species. The correct option among all the options that are given in the question is the first option or option "A". I hope that the answer has come to your help.
B. Being new to the country, it is safer for Sarah to take precautions until she gets acclimated
I believe this is the answer as the other answers take too many assumptions as the question doesn't explicitely state that Sarah has skin problems.
The Fossil record is the history of life as documented by fossils, the remains or imprints of the organisms from earlier geological periods preserved in sedimentary rock.
Answer:
two billion hands
Explanation:
i feel like a billion people could strech around the world
Answer: i think the answer would be proteins, but please dont kill me if it isnt :( im in midle school so we recently covered this.
Explanation
heres the deal
dna- transcribed to rna example: AGT- UCA, then you trabslate it, which then turns into specific proteins after being coded by codons (3 nucleotides put together.) hope this helps!
think nucleotide= A or G or C or T
CODES: A codes for T
C 4 G
in RNA, Thymine (T) codes for Uracil (U)
