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.
Hydrogen bonds form between a hydrogen that is engaged in a polar covalent bond with oxygen or nitrogen (thus carrying a partial positive charge) and a different oxygen or nitrogen also engaged in a polar covalent bond (and thus carrying a partial negative charge). I hope my answer has come to your help. God bless and have a nice day ahead!
Option D as they started with “some might think that” which means they are starting the opposing point, the counterarguement.
Answer : Had , Got , Slammed , Hid , Thought , Feel
