Four of the earliest agrarian societies developed in fertile river valleys. Since people had already tamed plants and animals in those areas, societies had a head start. The first of these was in Mesopotamia, where Iraq is today. The land between the Tigris and Euphrates rivers was especially fertile
Answer:
B too much of society's resources is being used to produce plastic.
Explanation:
From the actions of the plastic manufacturing plants, the environment is being polluted and thus has a result in the ecosystem, individuals such as the fishermen are rendered jobless with no compensation.
It can be concluded that too much of society's resources is being used to produce plastic.
Option C would have been corrected if the fishermen were compensated and pollutants treated to reduce toxicity.
Option D is also wrong.
The bicarbonate-carbonic acid buffer system
A blood test called an arterial blood gases (ABG) test analyzes the pH, oxygen (O2), and carbon dioxide (CO2) levels in an artery. The purpose of the test is to evaluate the patient's lungs' ability to eliminate carbon dioxide from the blood and transport oxygen into it.
The buffer between carbonic acid (H2C03) and bicarbonate (HCO3-) is essential for preserving the acid-base balance in the blood. Sodium bicarbonate (NaHCO3) serves as a weak base and H2CO3 as a weak acid.
Bicarbonate makes weak acids from strong acids, and strong bases from weak acids generate neutral solutions.
By controlling the generation of bicarbonate, the kidneys support the bicarbonate buffer system. The lungs help by controlling the amount of carbonic acid produced.
Learn more about the bicarbonate buffer system here:
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This is known as external validity.
External validity refers to the extent to which findings from a research study can be extrapolated or generalized to people who were not part of the study, or to the population in general. In quantitative research, generalizability or external validity of a study serves as a quality check when assessing the value of a study.
