Answer:
D)
The city of Chernobyl in Ukraine was the site of a nuclear explosion in 1986. Dozens were killed immediately, but the massive amounts of radiation that resulted put the lives of millions of people in danger. Thousands have since died due to the effects of the radiation.
An air conditioner because the teacher is setting the temperature and air conditioners always makes the class cold.
Answer:
Observational method/Field experiment
Explanation:
A field experiment is conducted on a daily bases. In this field experiment, the experimenter still manipulates the independent variables.
But this happened only in real-life settings. In this experiment, the experimenter was not in that condition to control the extraneous variables. This experiment can conduct real life.
Thus Terence mentor recommends the observational method/field experiment.
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Answer:
necessary, not sufficient
Explanation:
Water is a necessary, not sufficient condition for staying alive.