Which of the following describes how once you begin to yawn, it is difficult to stop, and it must run its course? Multiple choice question.

A)
fixed action pattern

B)
imprinting

C)
classical conditioning

D)
operant conditioning

What kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid

What in scientific term why the salty popcorn causes this thirst

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.