A class is designing an outdoor model to show the geologic time scale from Precambrian time through the present. If they used a scale of 1m=100 million years, how long will their model be? Cenozoic Era= 66 million years
Mesozoic Era= 185 million years
Paleozoic Era= 291 million years
Precambrian Era= about 4,058

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.