How are gross production and net production different

Gross production is going to be all the production combined while net production is the gross production - respiration.

Gross production: all the production combined through photsyntheis

net production is the gross production - respiration. (IE the leftovers)

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

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.