Mitosis is a type of cell division that takes place in the somatic cells where two daughter cells are formed with the same number of chromosomes as the parent (diploid 2n). Meiosis is a type of cell division that takes place in the sex cells where four daughter cells are formed with half the number of chromosomes as the parent (haploid, n). In this case, if the gametes were formed by mitosis then it means they would have a diploid (2n) number of chromosomes.
Advertising helps the consumers to be aware of the products and services being offered. There are objectives that can help the producers on how to advertise their products, they can be classified on three primary purposes namely to inform of the product, to persuade and to remind.
When referring to knowing where to find something when you need it you mean that you do not need a memorization of all things, you just need a source to find it when in need. I hope this answer suited your needs.