Answer:
Randomized
Explanation:
Observational Studies and Randomized Trials are two ideal ways of determining the outcome of certain tests.
In the Observational course the study is conducted in a true to life scenario and the result of what happens is recorded. Meanwhile, in the Randomized Trial there purposefully placed conditions that are ideal and these are evaluated after specific interventions.
Since the pool manager did not let different pools grow algae at will before putting in the chemical this study would not be considered observational. Instead he set up three different pools of the same size with the similar amount of contaminants and then tested the algaecide. This classifies this as a Randomized Trial.
Did you see if someone posted this question already paste it to your google tab on top and search it
Explanation:
Answer:
b. for nutrition and energy
Explanation:
Birds use seeds as a source of food, and food provides nutrition and energy to the body. So, the correct answer must be b.
i honestly am not smart so i don't really know
Answer:
to set up the central conflict between the families, to invoke feelings of sympathy in the audience, and to inform the audience where the story takes place
Explanation:
