Awoman has 23 chromosomes and a man has 23 chromosomes. together they produce 46 chromosomes to have a child. when does the child have 23? or does the child stay with 46 chromosomes?

When analyzing tree rings, what do scientists assume a thin ring indicates?

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease

9. the history of life on earth is recorded in