They exhibit considerable molecular complexity and diversity
hope this helps
I do think that they close to not allow too much of either water or air from entering.
the hollow tube allows water to flow easily.
https://www.bbc.co.uk/bitesize/guides/z28g7p3/revision/1
Answer:
conditioned stimulus
Explanation:
Conditioned stimulus -
It refers to as the neutral stimulus , which triggers or initiates the conditioned response , is referred to as the conditioned stimulus .
Ivan Pavlov was the very first one to give meaning to the term conditioned stimulus , by experimenting on the dogs .
Hence , from the given scenario of the question ,
The correct answer is conditioned stimulus .
The crust is the top layer of earth, mostly covered with dirt and rocks. Other layers are rock or molten rock. The top layer is way cooler than the other layers, the closer you get to the Earth's core, the higher in temperature the layer is.
I hope this helped you!
Brainliest answer is always appreciated!
