Mitosis, the process by which the nucleus of a cell divides into two nuclei, each containing a complete set of the cell's chromosomes, is essential to life because it A. contains four stages for gametes. B. maintains genetic continuity from one generation to the next .C. controls cell functions to ensure successful development. D. provides energy for the cells

the correct option is option a

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

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.