Utah's Great Salt Lake has an average salinity seven times higher than that of the oceans. Very few multicellular organisms live in this harsh environment. An example is the brine shrimp, which must denote a large portion of its metabolic energy to osmoregulation. These brine shrimp must .

actively pump water back into their cells to counter its loss due to osmosis.

Explanation:

The salt lake is the hypertonic solution that means it exhibit the high concentration of salt as compared to what is present in the cells of the organisms. Thus the cells of animals or plants in the hypertonic solution shrinks as they will loose water. The water moves from the higher concentration to the lower concentration.

The brine shrimp cells will shrink in the hypertonic solution of the salt water. Thus the shrimp will actively take or pump water inside the cell to counter balance the loss of water caused due to osmosis.

answer: c.

explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.