Any value that is set and cannot change is a variable. true, false/

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.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.