Earl has normal color vision, while his wife Erma is colorblind. Colorblindness is an X-linked trait, and the normal allele is dominant over the colorblindness allele. If they have a large family, in what ways should the colorblindness affect their children?

allowed for the prediction of the properties of missing elements.

when it is at an intermediate population density

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.