What role does heat energy from the sun play in influencing ocean currents? a) the higher rate of evaporation at the equator causes water from the poles to move toward the equator.
b) the polar ice caps melt due to the heat of the sun, causing warm currents to move toward the equator.
c) the colder temperatures at the poles causes water to freeze and expand, pushing cold currents toward the equator.
d) the warm water at the equator moves toward the poles and the cooler water from the poles moves toward the equator.

The correct answer is - D) The warm water at the Equator moves toward the poles and the cooler water from the poles moves toward the Equator.

The Sun has a crucial role in the movement of the ocean currents and their thermal properties. The Sun rays manage to heat up more the waters that are on and in close proximity tot he Equator, while the waters on and around the poles are not properly heated because the Sun rays fall at a very sharp angle and a re much more dispersed.

The warm waters on the lower latitudes and the cold waters at the higher latitudes have different densities. The different densities of the waters makes them move. The warmer waters move on the surface and toward the poles, while the colder waters move as deep currents toward the Equator.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )