Which of the following is an example of an electric force acting at a distance?

a.
pam applies a force to the head of a nail by pounding it with a heavy, iron hammer. the nail then wedges itself between the fibers of a wooden board.

b.
pam jumps out of an airplane. air rushes past her body a very high speeds as she falls. she then opens her parachute and feels an upward force.

c.
pam rubs a glass rod with wool, then moves the rod over a pile of small paper scraps. the scraps leap into the air and stick to the rod.

d.
pam applies a twisting force to the steering wheel of her car. this force pushes on tubes filled with fluid, which then push the wheels of her car to one side.

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Your two friends just told you what to order for them at the drive through fast food restaurant. you give the order but when the food comes about 10 minutes later, you don't remember what each of your friends ordered your memory of the order was in __ memory. a. semantic b. flashbulb c. long-term d. short-term i think i know but i'm not really sure

What is the main storage pool for phosphorus?