What structure is represented by the arrow in the diagram above?
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How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

How much time has elapsed from the very beginning of "the memior of the conquistador bernal diaz del castillo" to the end? a. castillo's whole life b. a quarter of an hour c. a few weeks d. a decade