Hi! I was hoping you could help me out with these questions. 1}Some snakes move

Question

Hi! I was hoping you could help me out with these questions.
1}Some snakes move into a particular area.Over time , one group ofthese snakes becomes active only at night;another group is activeonly during the day.Because they are not active at the sametime,the two groups of snakes do not breed with each other.This isan example of (a)reproductive isolation(b)polyploidy(c)geographicisolation.
2} True or False?When a neuron is stimulated,positively chargedsodium ions move outside the axon.
3} Is aorta an artery?
4}Describe the endocrine system's negative feedback mechanism.
5}What is the path of blood through the heart from entering througha vena cava to leaving through the aorta?
Thanks a lot for helping !

Explanation / Answer

1) A- Reproductive isolation 2) True 3) Yes- the aorta is the largest artery in the body. 4) Negative feedback decreases the deviation from an ideal normalvalue, and is important in maintaining homeostasis. 5) vena cava, right atrium, right ventricle, 2 pulmonary arteries,lungs, 4 pulmonary veins, left atrium, left ventricle, aorta

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