How has global warming affected biodiversity?

These climate change impacts are in part due to how we have altered land use. Turning natural areas into cities or agricultural fields not only diminishes biodiversity, but can make warming worse by chopping down trees and plants that help cool the planet.

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.