Which of the following represents an ion? A
A particle that has 12 protons, 11 neutrons, and 12 electrons.
B
A particle that has 9 protons, 9 neutrons, and 10 electrons.
С
A particle that has 14 protons, 14 neutrons, and 14 electrons.
D
A particle that has 19 protons, 21 neutrons, and 19 electrons.

a physical change is being made.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.