answersLogoWhite

0

Because diseases are being naturally selected to resist attack and be better infectors of humans.

User Avatar

Wiki User

14y ago

What else can I help you with?

Related Questions

How are plants made resistant to pests?

The different methods of plant breeding for disease resistance includes seed selection, pedigree selection,recurrent selection,use of natural or artificial induced mutants etc.


How has God made a peacock special?

Natural Selection and Sexual Selection has made a peacock 'special'.


Who made the theory of 'Natural Selection'?

Charles Darwin


What is the difference between sexual and natural selection?

Natural selection is survival of the fittest, while sexual selection is a preference for a given trait made by the limiting sex. It is strangely, but usually in opposition to natural selection (E.G., male peacock's tail feathers that garner attention from predators and prevent the peacock from fleeing well).


Why was Charles Darwin important?

because he was a famousactor.


Is diphtheria a man made or natural substance?

Diphtheria is a disease caused by a bacteria. It is entirely natural, unfortunately.


Are new alleles made by natural selection?

No - natural selection does not create new alleles. Variation in alleles needs to exist in the population in order for natural selection to occur. Natural selection will involve the change in allele frequencies over time, but it does not create new alleles. New alleles are the result of mutations.


Using natural selection to define why amphibians have 3 chambered hearts?

God made everything the way that He wanted to, and He made it that way.


What type of makeup is Bare Essentials mineral makeup?

Bare Essentials mineral makeup is a selection of makeup products which are made from pure minerals. It aims to have a natural look as it is made from natural minerals.


How are different strains of marijuana made?

Answer they aren't made, they're grown. the differant strains come from crossbreeding different species, natural selection and general mutations.


Why aren't all building made like the Hagia Sophia if it is able to with stand natural disasters?

While it might be cost effective to build a few of our most importand buildings to withstand natural disasters, it would not be cost effective to do so for ordinary buildings. Even then, the strcutures we think of as very sturdy are not invulnerable.


Are humans man made?

no you idiot, we started as micro organisms and fu**ed and developed into someting else and contiued then men and women were made