The density gradient model most closely resembles the... urban model.
<h3>What is the density gradient model?</h3>
This model establishes particles are not equally distributed but there are some zones with more or fewer particles. Moreover, particles move from a higher concentration zone to a lower concentration zone.
<h3>What urban model is similar to the gradient model?</h3>
The density gradient model mostly resembles the demographic transition model that explains the density of demographic zones changes over time as more people move to the zone or people leave the zone. This is similar to density gradient because it shows density is not uniform and it evolves.
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If there are a lot more females then males in a country, there could be a rise in births, and if it is serious it could lead to an overpopulation problem. If there are more males there could be a lack of births, and the infrastructure could be compromised. In both cases specific gender-related jobs could be in short supply or there might not be enough workers for a steady economy.
Answer:
unconditioned stimulus
neutral stimulus, unconditioned stimulus
Explanation:
Classical conditioning is the process of linking two stimuli to produce a response. There are 3 phases for classical conditioning:
- Phase 1 (before conditioning): During this phase an unconditioned stimulus is paired to produce an unconditioned response. An unconditioned response naturally triggers a response.
- Phase 2 (During conditioning): This phase involves pairing a neutral stimulus with an unconditioned stimulus so that the neutral stimulus becomes the conditioned stimulus. The neutral stimulus does not naturally trigger a response.
- Phase 3 (after condition): In this phase only the conditioned stimulus is presented to produce a conditioned response. The conditioned response triggers a response after pairing with an unconditioned stimulus
The physiologic factors that affect motility of food in the stomach and small intestines is :
- The abnormalities in the muscle.
<h3>What
cause stomach motility?</h3>
Genes are known to often play a role in in some cases of gastric motility disorders and it is seen in Hirschsprung's disease, intestinal pseudo-obstruction, and others.
Note that Weak contractions of the small intestine are as a result of the to issues in the muscle and are known to be linked or associated with diseases e.g. scleroderma.
Note that connective tissue disorders can lead or cause damage to the intestine and as such, the physiologic factors that affect motility of food in the stomach and small intestines is the abnormalities in the muscle.
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