D — this is the nature vs. nurture debate
The simple answer is that in a battery the chemical reactions that produce the electrical current are produced from materials that are already in the battery itself, whereas in a fuel cell, the reactants, almost always Hydrogen and Oxygen are fed to the cell like an external fuel.
. However, while a battery makes electricity from the energy it has stored inside the battery, a fuel cell makes its electricity from fuel in an external fuel tank This means that while a battery may run dead, a fuel cell will make electricity as long as fuel is supplied. For hydrogen fuel cells, hydrogen is the fuel and it's stored in a tank connected to the fuel cell. When hydrogen in the tank runs low, you refill it, or replace it with a full tank.
I belieive it is lactid acid fermentation or Option A
Answer:
50% portion are from mother...
Explanation:
If crossing over does not occur then 3 auto-somes as well as one X chromosome shall always come from mother. Even if two XX were present in case of a female 50% of chromosomes shall always be contributed by the mother...
Answer;
Silent
Explanation;
-Silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein. These mutations result in no change of the amino acid or amino acid functionality when the altered messenger RNA (mRNA) is translated.
