In a building, a system is installed that uses the geothermal energy in summer to cool the building and the same energy to warm the building in winter. Which is this system?

"a.) well–developed vascular system."

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

the titanic would be the correct answer