Answer:
Ethical
Explanation:
Ethics defines the correct rules of behavior or conduct necessary during research. The researcher has a moral responsibility to safeguard research participants from any sort of harm.
Four ethical principles to be followed while conducting psychological research:
1. To obtain informed consent.
2. Providing the right to withdraw anytime during the research.
3. Protecting confidentiality and anonymity.
4. To avoid deceptive practices.
Earth can be considered as a closed system, since it only receives sunlight (energy), while the overall mass stays constant, without (almost) any exchange from space. Another example of a closed system is a saucepan or frying pan, on a stove, when its lid is closed.
Answer:
B and D are correct.
Explanation:
A is incorrect: Trees cannot live fully immersed in sea water.
C is incorrect: The surfaces are very varied all over the ocean floor.
To evaluate a patient for hypoxia, the physician will carry out the arterial blood gas (ABG) analysis.
Hypoxia refers to the deficiency or lack of oxygen in the blood. In extreme cases, it might be even fatal to the individual and lead to death.
In the arterial blood gas (ABG) analysis, a sample of blood is taken from the artery and measured for the amount and pressure of the gases like oxygen and carbon dioxide in the blood.
This is a laboratory test that shows the amount of the required gases in the blood. By measuring the amount of the gases, we can understand if the person has hypoxia or not. Thus, this test is carried on the person.
To learn more about hypoxia,
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