Answer:
Memory cells remain ready to respond to a subsequent encounter with a pathogen quickly and efficiently. This so-called secondary response is always stronger than the primary infectious response
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Explanation:
Waning Moon The term used to describe the period of the Moon as it moves from a Full Moon to a New Moon, decreasing in visibility with respect to an Earth-bound observer
Explanation:
Answer:
Biological evidence of the age of the earth includes radioactive dating of rocks, fossil evidence, comparative anatomy and molecular clocks
In a broad range of terrestrial environments, microorganisms are the key decomposers of organic matter and release nutrients in the soil for plant growth as well as CO2 and CH4 into the atmosphere.
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D: Heavy rain, cooler weather and clear days
