Describe two ways in which the evolution of organisms can have a harmful effect on humans

When evolving, microorganisms such as harmful bacteria may develop a resistance to antibiotics. This means that the disease the bacteria in question cause will be harder to treat. This is quite bad since bacteria can pass on traits to other bacteria without even multiplying.

The flu virus is also a good example. Generally, the virus itself mutates quite frequently. This means that with each mutation the virus has a potential to gain a genetic trait which may cause more severe flu symptoms or a resistance to drugs/the antibodies our bodies produced to counter-attack the type of flu virus it has previously encountered.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.