If it is not an isotope then it has around 21 neutrons
Answer:
с
Explanation:
the first quantum number of an electron gives the information about the energy level the electron is in
The correct answer would be, "<span>D. beta-galactosidase".
As all the others are made in different organisms.
Hoped I helped.</span>
D.
This is self-regulation because when the population of the insects becomes too large, it regulates itself and starts to decrease due to a shortage of resources.
It depends on the type of decay that is taking place if its a β+ it will decay into Mn-52 β- decays into Co-59
