The level of protein structure that involves interactions between the side chains of the amino acids rather than interactions between molecules within the backbone is: a) primary b) quaternary c) secondary d) tertiary

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?

How do temperature and salinity affect deepwater currents? 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. 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 density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water.