Answer:
eukaryotic cells have a nucleus
Both of those two independent methods of investigation resulted in the same pattern which means it is significant.
Fossil records explain the history and evolution of life based on fossils. Fossils are remains of organisms preserved in sedimentary rock. In fossil records they are analyzed and arranged chronologically and in taxonomic order, so that can represent the evolution.
Phylogenies describes the relationships between organisms (species): from which organisms it is evolved, to which species it is most closely related etc.
It is used to organize living organisms into specific categories.
None because they are children play toys not scientific tools!
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The answer would be Sputnik 1. This was a Russian space probe launched during the Space Race between the Soviet Union and the United States.
