When a large percentage of a population is vaccinated against an infection, the causative microbe is unable to spread easily through that population. Because of this, susceptible individuals who cannot be vaccinated are protected to some extent by the community around them. This phenomenon is known as .
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Biology, 21.06.2019 20:10
Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt
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Biology, 22.06.2019 01:30
Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?
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Biology, 22.06.2019 02:00
The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.
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Biology, 22.06.2019 03:00
Nerve cells are specialized to respond to stimulitrue or false?
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When a large percentage of a population is vaccinated against an infection, the causative microbe is...
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