Answer:
The correct answer is 2 out of 3.
Explanation:
70% of our earth is covered with water so it can be assumed that there would not be any shortage of water for us but this is not true because only 3% of water is freshwater and out of that 2% is in glaciers which is not usable until they melt.
As the ground level water is going down and rivers are losing their identity due to pollution and environmental change it is estimated that two-third of the population by 2025 will face water scarcity. So out of 3 two people will suffer from water shortage.
Answer: Those parts is were all the oxygen is distributed through the human body, and so technically it can be considered the respiratory system.
Cerebrospinal fluid (CSF), clear, colourless liquid that fills and surrounds the brain and the spinal cord and provides a mechanical barrier against shock. Formed primarily in the ventricles of the brain, the cerebrospinal fluid supports the brain and provides lubrication between surrounding bones and the brain and spinal cord. When an individual suffers a head injury, the fluid acts as a cushion, dulling the force by distributing its impact. The fluid helps to maintain pressure within the cranium at a constant level.
https://www.britannica.com/science/cerebrospinal-fluid
B.) False, it would be about the same due to the percentages
