I would say man made but not to sure with out answer choices..
Answer:
Echolocation technically isnt a technology. Bats and dolphins use the tecnique to search for food by bouncing sound waves off of objects in front of them
i hope this answer can help in some way
Explanation:
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<u>Gene flow — also called migration — is any movement of individuals, and/or the genetic material they carry, from one population to another. Gene flow includes lots of different kinds of events, such as pollen being blown to a new destination or people moving to new cities or countries.</u>
well ofc air is just one of the products we get from photosynthesis