How does herd immunity protect people who
cannot be vaccinated?

The resistance that is present in a population of specific area which does not allow the spread of contagious disease. It occurs only when maximum number of people are immune to that disease through the use of vaccines, this phenomenon is called herd immunity.

Herd immunity protect people who

cannot be vaccinated because most of the people are immune to the disease and this immunity reduce the spreading of a contagious disease.

it means

miss jennifer is buying pencils in packs of 12, notebooks in packs of 16, and red pens in boxes of 20. she needs to have the same number of pencils, notebooks, and red pens. how many packs of each type should she buy?

answer mine : )

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.