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<span>Across nearly seven million years, the human brain has tripled in size, with most of this growth occurring in the past two million years.</span>
Answer:
an automatic response established by training to an ordinarily neutral stimulus.
Explanation:
For example, the smell of food is an unconditioned stimulus, a feeling of hunger in response to the smell is an unconditioned response, and the sound of a whistle when you smell the food is the conditioned stimulus. At this point, the response becomes known as the conditioned response.
Answer:
What are the weaknesses of the Articles of Confederation?
Weaknesses of the Articles of Confederation
Each state only had one vote in Congress, regardless of size. Congress had not have the power to tax. Congress did not have the power to regulate foreign and interstate commerce. There was no executive branch to enforce any acts passed by Congress.
Explanation:
in a process sometimes called sea-floor spreading, molten rock forces its way upwards through cracks along the valley.the molten rock cools, hardening into new oceanic crust.
