What is the role of the helicase enzyme in dna replication? a) it breaks apart the bases b) it adds nucleotide to the chain c) it checks the dna for errors d) it ties the chunks of dna together me with this question asap

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

What are 3 reasons that natural selection occurs

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.