Pikaia gracilens is an extinct invertebrate animal described from the wonderful pre-cambrian soft-bodied fossils of the burgess shale in british columbia. examinations by paleontologists have revealed that organisms belonging to this species had a prominent notochord and segmental muscles. from this information, you could conclude that it is closely related to
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Biology, 22.06.2019 02:00
What is the next step in muscle contraction after the actin changes shape? (apex)
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Biology, 22.06.2019 02:30
The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community
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Biology, 22.06.2019 07:00
Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs
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Biology, 22.06.2019 11:00
In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.
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Pikaia gracilens is an extinct invertebrate animal described from the wonderful pre-cambrian soft-bo...
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