Ascientific theory is different than the way we use the word theory in common speech. which of the following describes the way the term theory is used in everyday life? a. it explains how nature works. b. it is supported by observation and testing. c. it is supported by experimental results and data. d. it is a random guess about how something happened.

D. It is a random guess about how something happened.

Explanation:

In everyday life, a theory is a hunch or a guess about how something happens (in the scientific method, we might call it a hypothesis).

A is wrong. It doesn’t necessarily explain how nature works, because it hasn’t been tested by experimental testing and observation.

B and C are wrong. They are features of the scientific method.

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.