Mina has excellent hearing. she can hear musical notes and electronic chimes that her friends all miss. mina's for sounds seems to be lower than that of her friends. a. difference thresholdb. jndc. absolute thresholdd. minimal tolerance(i don't understand this at all)

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation

18. which statement about cancer is true?

Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse