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The answer is B, Pangaea. This was the name for the large continent that supposedly existed before we had all of our separate continents today (all of which were part of Pangaea).
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Both questions in this item are just similar. The area in the cerebral cortex that is involved in the initiation of the motor impulses are localized in the posterior aspect of the frontal lobe. The answer to this item is the third choice.
Frontal lobe is one of the principal areas of the brain that is involved in the motor functions. The specific cortex for this function is commonly called as the M1 or the primary motor cortex.
I believe it is D solid to gas
The effect of sympathetic nervous system stimulation on the heart is to increase heart rate and myocardial contractility.
In the sympathetic nervous system (SNS), as the sympathetic stimulation increases, the heart rate also decreases along with the force of contraction.
The heart rate increases because of the release of hormones catecholamines - epinephrine and norepinephrine whereas the force of contraction increases because of a higher end-systolic volume [ESV] which requires a forceful heart contraction to pump more blood out of the ventricle which will decrease the ESV value.
The end-systolic volume [ESV] is the amount of blood that remains in a ventricle after a contraction (systole) which is to be maintained at around 50 mL of blood.
Learn more about the sympathetic nervous system here
brainly.com/question/12958051
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