Mutations are harmful if they decrease the function of some part of the body. Unfortunately, this is the case far more often than them making an improvement.
* brain tumors and facalie tumors
Vestigial structures do not harm the organism. Nature selects against only harmful traits.
SalmonellaShigellaEscherichia coli (E. coli)StrepAll Bacterial STDs (e.g. ghonorea)Lesser Known:campylobacterEnterococcus faeciumListeriaClostridiumGiardiaPseudomonasVulnificusdavavuses
fungi is the cause of food moulds, and some skin rashes such as warts. So it can be infectious to the things it comes in contact with and potentially harmful to that organism.
Brain tumors can either be harmless or harmful. However, they are not usually distinguished using these two words. When a tumor is harmless, it is known as "benign". When it is harmful, it is referred to as being "malignant".
there is no cure yet, but if tumors become harmful they can sometimes be removed.
it is harmful because it can dehydrate the cells in our body
There are many products of an organism that destroys or weakens harmful microorganisms. This could be an enzyme for example.
the organism's environment
makes the organism better able to avoid predators.
makes the organism better able to avoid predators.
Parasites
well harmful toxins is a poisonous substance that are within other organism.
Because the chemicals inside the beneficial burn away the organism.
antibiodic
Chlamydomonas is not harmful to us because it is a photosynthetic organism Also a green Algae