About 4000 americans die each year from allergies. however, this is only about 0.2% of the total deaths in the united states per year. is the medical research and expense for allergy and asthma treatment really necessary? explain.

b.have there own function.

flooding wildfire landslides climate change the factors listed have an immediate effect on the animal populations found in any habitat. the four factors would lead to a death. b emigration. eliminate c immigration. d mutations.