Scientific method is a method of procedure that has characterized natural science. It is consist of steps namely: make observation, conduct research, form hypothesis, test hypothesis, record data/result, draw conclusion and replicate. Deciding to give only female rat caffeine and see if those given caffeine couple more often than those not given caffeine is an example of testing which is step four of the scientific method.
Answer:
Experimental research
Explanation:
An experimental research is a study that strictly follows the scientific research design. It constitutes a hypothesis which is the basis on which the experiment derives conclusion, a variable which can be manipulated by the researcher(independent variables) such as making each group learn different number of items, and variables that can be measured, calculated and compared(dependent variables)
Atomic number is equal to no. of protons.
So, atomic number of A is 73
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Answer:
2. was the queen of England