The answer is the outer core.
The outer core of the Earth is made up of liquid metal. The liquid in the outer core pass through the magnetic field and this causes the flow of electric current with in it. The magnetic field gets stronger as the liquid metal passes through it. What makes the liquid metal move is the inner core. It heats up the outer core which triggers convection.
The answer to the question is c) a dendrochronologist interprets tree rings
Answer:
Negative nitrogen balance
Explanation:
Based on the information provided within the question it can be said that in this scenario it is clear that the client is in a state of Negative nitrogen balance. This means that the individual is excreting more nitrogen than what the amount of nitrogen that the body is ingesting. This happens in many scenarios such as serious tissue injuries, fevers, hyperthyroidism, decubitus ulcer with drainage, etc.
The best answer to the question above would be letter d. The sentence presented which is 'Researchers helped further the biological perspective when they demonstrated that electrical stimulation of the brain could evoke emotional responses in animals.' demonstrates how new discoveries can influence perspectives.
Answer - Theory
Reasoning - Your best bet and term to describe the evolution by natural selection is theory as to still scientific theory/research is still ongoing and changes can be made in a different direction.
