The answer is D as an electron is given off (which is a beta particle) and an electron is so small in weight/size (1/1840) that it is not counted when the mass number is calculated, instead the neutrons and protons are used
Also the atomic number is only dependant on the number of protons as this identifies the element as no two elements can have the same number of protons but can have the same number of electrons (e..g isotopes). So nothind is affected so it has to be D
The answer to this question is what we called the Embryonic connective tissue. An embryonic connective has two types which is known as mucous connective tissue that is functions to resist compression which is found in the umbilical cord and the Mesenchyme that functions as the primitive connective tissue that is composed of collagen fibers.
I'm not sure but think its A
The correct answer is true.
Most oil and natural gas formed where forces within Earth are folded and tilted thick rock layers, and they are also formed with plankton in which is concealed with sediment (a natural & solid material that is fertile to enrich nutrients in soils).
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Because Human Cell's cell membrane does the Cell Wall's job as well as determine what goes in and what come out. Unlike the animal cell, the Plant Cell's cell membrane can only do one job at a time, so it has the Cell wall to do the job of keeping the cells shape and structure.