Please helppp Question 1 of 4
1.st Reproduction begins when body cells split so they only have half of the normal number of
chromosomes. The resulting cells are called ___
2nd. It is the function of the male reproductive system to produce
female reproductive system produces
cells

3rd. When a sperm and an egg cell meet it is called
called a
This process makes a new cell called ___
Word Bank:
sperm
fertilization , egg , zygote
gametes

1=gametes

2=eggs

3=zygote

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.