Answer:
When it comes to determining the age of fossils there is absolute and relative dating. Relative dating is used to determine which fossil is older, while absolute dating is used when determining the age of a particular fossil. Rocks that contain radioactive elements in it, allow scientists to determine the age of fossils using the amount of radioactivity. Carbon-nitrogen absolute dating is a method for determining the age of fossils using radioactive isotopes of these elements.
Explanation:
Answer:
Anxiety Disorder
Explanation:
People can feel anxious about a lot of things: the first day of school, a job interview, a first date. Anxiety is that pang of “what if” that makes your heart race and your palms sweaty. There’s a difference between healthy anxiety and a paralyzing fear about the future.
Feeling restless, wound-up, or on-edge
Hyperactivity
Trouble sleeping
Fatigue
Difficulty concentrating
Irritability
Muscle tension
Difficulty controlling feelings of worry
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Operant conditioning, in which the response being conditioned is voluntary and purposeful, differs from classical conditioning, where the response is automatic.
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