What does the inside of a magnet look like?

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

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.