Biology, 18.10.2019 05:50 josephjannace12
Match each fossil with the layer where it’ll be present based on these conditions: dinosaurs existed before birds. corals existed between trilobites and amphibians. trilobites are the oldest fossils. dinosaurs are younger than amphibians. birds are the youngest species to be observed in this stratum. layer a is the top layer.
Answers: 2
Biology, 21.06.2019 21:30, irishdreamer0689
List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.
Answers: 3
Biology, 21.06.2019 22:00, acostasilvana1osw8tk
The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.
Answers: 1
Biology, 22.06.2019 07:00, doris8051
What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele
Answers: 3
Biology, 22.06.2019 08:30, aniecethompkins82
Which of the follow describes a disadvantage secondary sources have compared to primary sources?
Answers: 1
Match each fossil with the layer where it’ll be present based on these conditions: dinosaurs existe...
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