"necessity is something in the mind, not in the objects." explain what this means and what hume’s reasons were for holding it.

Explained

Explanation:

Let me first make the opposite clear: there is a necessity in the item. For example, it is essential to try to turn an acorn into an oak. At that point the importance of snuffing it is in the downpour that suffocates it, or the heat that heats it, or the squirrel that is consuming it.

It's regarded as the "last" trigger that the acorn will do, as it can't resolutely try. Different causes are known as the "proficient" cause: "Evaporating it was the efficacy of the sun on the acorn," unlike what the sun would do to a heap of residue. It's dry right now, so the sun would just warm it up.

Hume agreed that we could confirm that, on the grounds that the movement of billiard balls on each other gives the mind the requirement of believing one ball pushes the other— bearing in mind that we have seen that we believe this impact— that since it occurs while we see it, we expect it and conclude that it will repeatedly do something very close.

In any case, he claims we trust it just because that's the way our psyches work, not because we can "demonstrate" any further that a billard ball hitting another is going to move it, but because our brains only act to make us accept we can really decide the cause.

question#1

ans:

cell is the basic unit of organization of all living things. cells are often called the building block of life and it is the smallest unit of life. the study of cell is called cell biology. cell consists of cytoplasm enclosed within membrane, which contain bio-molecules such as proteins and nucleic acid.

two third of cell is water, which means that two-third of your whole body is water. the rest is the mixture of molecules, mainly proteins, lipids and carbohydrates.

question#2

ans:

organ:

an organ is a group of tissues specialized to form a functional unit. an example is the heart in animals.

organ system:

an organ system is a group of several organs whose functions are synchronized to release an effective action in a living organism. an example is digestive system.

question#3

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#4

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system—working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#5

our body works because of the interactions that happen between organs and organ systems.  

for example:  

the heart to regulate blood flow throughout the body. the blood carries oxygen and nutrients to the cells and carries carbon dioxide and waste away from the cells. body systems work together in maintaining a constant internal environment. when this balance is disrupted, the body systems may not function properly, and human health can suffer.   you start to feel bad.