Controls: is the quantity of water used.
3) Inside a greenhouse, different types of trees are kept at 3 different humidity levels. These are left for 3
years. One tree is left outside in normal conditions. The heights of fthe trees are measured once a week.

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.

so whats the answer

which fault and or fold did you find most difficult to diagram