Answer: D- a mechanism for evolution
Explanation: The mechanism for evolution refers to the changes in allele frequencies within a single population.
There are four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow
One of the main controversial issues in population genetics is concerned with the relative importance of both mechanisms in determining evolutionary changes
The answer is Frederick Douglass
B. Classical conditioning produces permanent learning
Main Answer:
When I'm at home of an elderly man who has a tracheostomy tube and is on mechanical ventilation, and if his ventilator has malfunctioned, I will disconnect the ventilator first then I will deliver the oxygen to the old man using the face mask over the stoma.
Explanation:
What is ventilation?
Medical ventilation allows a person to breathe freely when the patient has any problem in the breathing process. The ventilator is the machine which is utilized to setup the components through which the oxygen will be supplied to the patient and thereby, he/she can breathe freely. Ventilators will be used when there is inadequate in take of oxygen by a patient.
To know more about tracheostomy, please visit:
brainly.com/question/12906333
#SPJ4
