This change in chromosome number is the result of B. Fertilization. Both of the individual gametes from the male and female combine together to produce a zygote or developing offspring that is diploid in most cases, and possess both sets of genetic content or chromosomal information, one from each parent.
As the amount of sunlight we see reflected increases, it is called WAXING.
As the ocean level rises sea water floods inland and puts a risk to water reserves like dammed lakes and other places by contamination