13 and Meiosis because each chromosome has its own number and it's divided up.
Hope I helped?
Density always tells you the mass of exactly one unit of volume of a given substance.The answer is 68 g
Alpha particles, also called alpha ray or alpha radiation, consist of two protons and two neutrons bound together into a particle identical to a <u>helium-4 nucleus. </u>They are generally produced in the process of alpha decay, but may also be produced in other ways.
Composition: 2 protons, 2 neutrons
Mass: 6.644657230(82)×10−27 kg; 4.0015061...
Electric charge: +2 e
Symbol: α, α2+, He2+
I think I found what your looking for
