Biology, 16.10.2020 16:01, harleyandpope90
Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of
bacteria. The researchers grew one type of bacteria in twenty-four identical covered petri dishes. Then, they opened
eighteen petri dishes and applied the three hand sanitizers to six petri dishes each. They left the remaining six petri
dishes closed as a control group. When the researchers measured the growth of bacteria two days later, the six dishes
that had no hand sanitizer showed the least amount of bacterial growth. The researchers concluded that not using any
hand sanitizer would lead to the least bacterial growth.
Which statement best explains why the researchers' conclusion was not justified?
O The experiment tested too many variables.
O The control group was not treated the same as the experimental group.
O The sample size of twenty-four petri dishes is not large enough
O The sample size of twenty-four petri dishes is too large
Answers: 1
Biology, 21.06.2019 18:40, 8343244
List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island
Answers: 3
Biology, 22.06.2019 06:30, keelahbrown09
If animal agriculture was eliminated, how much grain would become available for human consumption?
Answers: 1
Researchers conducted an experiment to identify the effects of three different hand sanitizers on th...
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