Answer:
to prevent history from happening in the future.
Without a source of systematically controlled synthetic stimuli experiments on the acoustic cues for speech, perception would be impossible.
<h3>What is perception?</h3>
A perception is referred to as an opinion or mindset an individual creates about something based on the experiences of his feelings and understanding of the environment. This perception can be both negative and positive.
A Stimuli help to generate a reaction or response to any concept or issue discussed in a systematic manner to meet any decisions. So without systematically controlled stimuli experiments for speech perception would be considered impossible.
Learn more about stimuli, here:
brainly.com/question/14452614
#SPJ4
Mostly, they worked with cattle in cattle drives. Hope this helps.
Answer: What ratifies to an amendment is the law that can change the laws can be changed once there is a new president for example.
Explanation: