The weather fronts are responsible for the movement of weather across the united states and canada
Answer:
The gene/genes which was applied for the molecular clock determination may have evolved at a slow pace in these two taxa when compared to species used to calibrate the clock; this will lead to the clock underestimating the time of divergence of the two taxa apart from each other.
<span>There are other avenues to find the cure to diseases that do not involve exploiting fetuses.
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Cnidarians have one body opening. There is no mouth or anus. Instead, food particles are drawn into the body by movement of water. Inside the body cavity are specialized cells called amoebocytes and collar cells that help digestand remove wastes. Cnidarians with the opening at the top have body plans called polyps, such as corals. Those with the opening underneath have a medusa body form, such as jellyfish.
I think the answer is D. Because it has the most numbers that make sense
