Biology, 11.09.2019 06:30 leilakainani26
Stella thinks that if people are exposed ultraviolet light then they are more likely get skin cancer. stella designs an experiment wherein sample a consisted of people were exposed to ultraviolet light and sample b was not.
what is the independent variable?
Answers: 3
Biology, 21.06.2019 20:00, scadengo123
In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls
Answers: 1
Biology, 21.06.2019 22:00, lazavionadams81
Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.
Answers: 2
Biology, 22.06.2019 05:30, ddavid9361
Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above
Answers: 1
Stella thinks that if people are exposed ultraviolet light then they are more likely get skin cancer...
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