vacuum activity इन हिंदी

vacuum: निर्वात शून्य

activity: कार्यकलाप क्रिया

	1.	This is most likely a vacuum activity based on foraging behaviour at shorelines.
	2.	A similar vacuum activity to tongue rolling is'vacuum chewing'by pigs.
	3.	One vacuum activity that has been studied is'tongue-rolling'by calves.

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