DNA is unzipped by helicase at the origin of replication. There are several origins of replications in eukaryotic DNA replication, while only one in prokaryotic replication.
The answer is : Light waves would be more likely to be refracted or diffracted, thus failing to reach plants and phytoplankton
Sunlight is needed by the producer(plants, phytoplankton) in the ocean to do photosynthesis. When an are is attacked by severe storm, the area will be covered by cloud of the storm which impede the light, cause it to be refracted or diffracted. This will cause less light comes to the producer of the plants and phytoplankton.
Through cellular respiration animals produce carbon dioxide which is used for the calvin cycle in photosynthesis of plants.
Answer:
The semi-plastic rock of the mantle behaves like water being heated. The lower mantle is hotter than upper mantle because it is closer to the hotter core of the earth. Therefore, this part of the mantle is less dense and tends to rise as the upper cooler denser mantle close to the crust sink to the bottom. These convection currents are similar to those of water in a container being heated from below.
The circular motion of these currents tends to drag along the crust due to force of friction between the lower crust and upper mantle. This is what powers tectonic plate movements. When two plates are driven by currents that intersect and churn in the same direction, they collide, at a convergent boundary as shown in position D in the illustration. The denser plate is subducted beneath the other. At position E, two plates are moving away from each other (called a divergent boundary) because each plate is being driven by a different convention current in the mantle. These current are cycling in opposing directions (one clockwise the other anti-clockwise).
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