I think is D Carbon dioxide
PLEASE MARK ME AS BRAINLIEST
Answer:
Conditioned stimulus
Explanation:
The conditioned stimulus is a previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response.
Scientific methods must be supported by observations and results from many investigations and are not absolute.
Chemical weathring is most rapid in areas that warm and wet.
Hope this helps !
Photon
Answer: B: take a family history and suggest genetic testing
Explanation:
I took it and got it right