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what is the etiological agent and the main manifestations of choleracholera is a bacterial disease caused by the vibrio cholerae the disease is
what is hansens disease etiological agent mode of transmission clinical manifestations and preventionthe etiological agent of hansens disease is
is there vaccine against tuberculosisthe vaccine against tuberculosis is known as bcg bacillus calmette-gueacuterin bcg is not used in some countries
what is tuberculosis how is the disease transmitted is there treatment for tuberculosistuberculosis is a disease caused by the mycobacterium
what are some human diseases caused by bacteria and what are their respective modes of transmissionthe major human bacterial infections transmitted
what is an etiological agent of diseasean etiological agent of disease is the agent that causes the disease it might be a living being substance or
what is the criterion used to classify hosts as intermediate hosts or as definitive hoststhe criterion used to classify hosts as intermediate hosts
concerning the number of hosts how are parasites classified parasites that need only one host are known as monoxenous parasites parasites that need
what is the difference between ectoparasite and endoparasiteectoparasites are parasites that explore the external surface of the host as for example
what is global warmingglobal warming is the enhance in the temperature of the planet due to accumulation of some gases in the atmosphere especially
what is bioremediationbioremediation is the use of microorganisms as bacteria protists and fungi to degrade noxious substances turning them into non
what is biological controlbiological control is a natural process to control the size of animal microorganism or plant populations biological control
why are transgenics considered a threat to the environmental safety transgenics can be dangerous to the entire biosphere as the transfer of genes
what is transgenic foodtransgenic beings are animals microorganisms and plants that have recombinant dna ie genes from other plants microorganisms or
what is plutonium reprocessing why is it a big environmental issueplutonium is the highly radioactive chemical element produced from uranium by
what is nuclear pollutionnuclear pollution having of radiations emitted from atomic nuclei these radiations is highly injurious to living beings they
what is the role of the ozone layer for living beingsozone o3 is a gas of the atmosphere that filters ultraviolet radiation from the sun disallowing
why does thermal inversion increases air pollution what harm can thermal inversion cause to humansthermal inversion confines at low altitude a layer
does thermal inversion occur in the winter or in the summerpollutant low altitude thermal inversion happens in the winter in this period of the year
is the upward move of warm air good or bad for the dispersion of pollutantsthe upward movement of warm air is a natural method of dispersion of
what are persistent organic pollutants popspops or persistent organic pollutants are toxic substances formed from organic compounds pops are made in
besides mercury which other heavy metals cause toxic pollution examples of other heavy metals that cause toxic pollution are lead cadmium and
what are the environmental harms caused by mercury pollution what are the main sources of mercury pollution mercury is a metal that when present in
what is a biodigestera biodigester is equipment that creates carbon dioxide hydrogen sulfide and fuel gases biogases like methane from organic
what is eutrophicationeutrophication is the process of excessive enhancing of nutrients like phosphate and nitrate in water because of direct deposit