Answer: The distance light travels in a year.
Answer:
The puff of air is an unconditioned stimulus, and blinking is an unconditioned response.
Explanation:
An unconditioned stimulus is the trigger for an unconditional natural and automatic response. In other words, all the action that will result in an automatic response, such as the puff of air, before the automatic blinking response.
An unconditioned response is that reaction we do without having learned it from anyone, but it comes out automatically and naturally. This action <u>always arises after an unconditioned stimulus.
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Some examples of this interaction between stimulus and response can be: when we burn when we touch something hot and take out our hand, when we cry when we cut onion, or jump when we hear a loud sound.
<u>This concept was discovered by Russian physiologist</u><u> Ivan Pavlov.</u>
Answer:
Experimental research.
Explanation:
The research is done to explain the particular phenomena. The research work increases the knowledge. Research is done in almost every field of the subjects.
The experimental research needs proper scientific procedure and methodology to perform the experiment. The scientific hypothesis, variable and proper calculation is done to explain the result. The psychiatrist has applied all these methods to conduct her research.
Thus, the correct answer is option (B).
Answer:
Options I and II
Explanation:
Evolution refers to the changes that occurs in the morphology, appearance and behavior of an organism over a due course of time. This changes occurs due to the natural selection method, where organisms undergoes changes and adapts to the newly habitable environment.
The above given options I and II are the evidences of evolution. The similarities in terms of bones and their defined structure between the bat wings and porpoise fins are signs of evolution that has taken place over a definite span of time. Also, the changes in the various breeds of dog that are caused by the artificial selection method is also an example of evolution.
Thus, the correct answers are options I and II.
