Are you referring to calcium carbonate?
<span>A polypeptide is a single linear chain of many amino acids, held together by amide bonds. A protein consists of one or more polypeptides (more than about 50 amino acids long). An oligopeptide consists of only a few amino acids (between two and twenty). </span>
<span />A polypeptide
Answer : The correct answer is-
This means that they cannot produce viable offspring and are reproductively isolated.
Mule (which is a sterile that is infertile animal) is produced by mating of horse and donkey.
According to Biological species concept of Ernst Mayor, a group of organism belong to same species if they produce viable and fertile offspring.
This means that organisms belonging to different species are reproductively isolated that is unable to produce viable and fertile offspring.
Thus, reproductively isolated is the right answer.
I am sorry if the answer is wrong but I think it’s fishes’ scales
Answer:
They are solid at room temperature. They include a carbon single bond.
Explanation:
Look at this image- hope it helps. Because of the fact that they are not bent, they are packed tightly and solid, not liquid.