If research is restricted, then the new discoveries made are limited. Which action is most likely to decrease the number of discoveries scientists can make?

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

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.