Some snakes move into a particular area.over time one, Ask an Expert

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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?

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Category:- Biology
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