Which statement best. describes the fossil record?
it is a complete record
it is an incomplete record
most fossils are older than 5. billion years
all fossils are younger than 600 years

It is incomplete record

Explanation:

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what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.