Basically most appropriate in your options would be last one ! as in biotechnology required DNA is inserted into organism so that the RNA formed or say protein formed will be of great use !
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<u>Given:</u>
No. of protons = 8
No. of Neutrons = 9
No. of electrons = 8
<u>To find:</u>
Atomic mass =?
<u>Formula to be used:</u>
Atomic mass = No. of protons + No. of Neutrons
<u>Answer:</u>
Atomic mass = No. of protons + No. of Neutrons
Atomic mass = 8 + 9
Atomic mass = 11
<u>Explanation:</u>
Atom is composed of three subatomic particles namely proton, electron, and neutron. The composition of these sub atomic particles is used to calculate the atomic mass.
The atomic mass of the element is nothing but the sum up value of the total <em>number of protons and neutrons</em> present in the nucleus of the atom of the element.
According to the given data, the atomic mass of the element with 8 protons and 9 neutrons is found as <em>11</em>.
Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.