What is the relationship between pathogens and infectious disease?

Infectious diseases are caused by pathogens, which include bacteria, fungi, protozoa, worms, viruses, and even infectious proteins called prions. Pathogens of all classes must have mechanisms for entering their host and for evading immediate destruction by the host immune system. Most bacteria are not pathogenic.

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igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava

answer; a male inherits only one allele of the x-linked gene controlling hair color;