The birds shown above have beaks with three different shapes and sizes. these genetic variations in the beak each appeared initially due to environmental factors mutations natural disasters conscious choice by the birds

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.

the answer would be b.:

880,000.

hope it ,

bioteacher101