Match these items. Match the items in the left column to the items in the right column. 1. a communicable disease
2. caused by bacteria, viruses or other pathogens
3. caused by many different factors such as heredity, lifestyle and environment
4. organisms that cause disease, germs
5. most common causes of infectious disease in the United States
6. animals that carry pathogens
7. method of protection against certain diseases

vectors
non-infectious disease
bacteria and viruses
chicken pox
immunization
pathogens
infectious disease

Aspecies has evolved an asexual mode of reproduction by having offspring develop from unfertilized eggs. which of the following will be true of this species' response to natural selection? there will be more deaths from natural selection because there is no mutation. there will be less genetic variation from recombination and a risk of not adapting quickly to environmental change. the species will increase in numbers because genetic variation is increased. the species will compensate for loss of genetic variation by hybridizing with other species. there will be fewer deaths from natural selection because sexual recombination always leads to extinction.