What causes land breeze and sea breeze?
a) the differential heating of land and sea by the sun results in the movement of air.
b) hot air from the sea blows over the land because there is a high pressure area over the sea.
c) cold air blows from the land over the sea because there is a low pressure area over land.
d) air blows from land over the sea because of the rotation of earth on its axis.

Isotopes of the same element have differ in their

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.

Explain the process that creates the heat of the sun?