His friend , hope this helped
That the oxygen levels in the test tube increased and carbon dioxide levels decreased because plants produce oxygen using carbon dioxide
The correct answer is A. Cephalic phase
Explanation:
In the digestive system and digestive process, there are different phases or stages. In the case of the cephalic phase, this is the first phase of the process and starts even before food enters in the organism, because fo this, the cephalic phase includes the anticipatory responses to food including salivation. This is the part or phase Pavlolv stimulated in his experiments because in this dogs salivated anticipating food and this was linked to the sound of a bell and that make dogs salivate even if there was no food.
Answer:
eugenics
Explanation:
Eugenics is the science of enhancing a human population by selective breeding in order to increase the prevalence of desirable heritable traits. I hope I helped! ^-^
