In an eight-year experiment, twelve populations of e. coli, each begun from a single cell, were grown in low-glucose conditions for 20,000 generations. each culture was introduced to fresh growth medium every twenty-four hours. occasionally, samples were removed from the populations, and their fitness in low-glucose conditions was tested against that of members sampled from the ancestral (common ancestor) e. coli population.

which term best describes what has occurred among the experimental populations of cells over this eight-year period?

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Apatient has an open displaced fracture of the second cervical vertebra. this is her fifth visit and the fracture is healing normally. what icd-10-cm code is reported?