In Terms of Community Ecology, Why Are Pathogens Often More

question 37

Multiple Choice

In terms of community ecology, why are pathogens often more virulent now than before?

• A) More new pathogens have recently evolved.
• B) Host organisms have become more susceptible because of weakened immune systems.
• C) Human activities are transporting pathogens into new habitats (or communities) at an unprecedented rate.
• D) Medicines for treating pathogenic disease are in short supply.
• E) Sequencing of genes in pathogenic organisms is particularly difficult.

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Definitions:

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