General Science Questions

The study of trees is called Dendrology.

The brain and spinal cord are two components of the Central nervous system which are responsible for sensory information.

In the given options, a high-fat diet is the only factor that contributes to hypertension.

The Sun is essentially all colors mixed together, which appear to our eyes as white. The brightest color emitted by the sun is yellow-green.

The study of Brain is called as Phrenology. 

Neurology is a branch of medicine dealing with disorders of the nervous system.

Nephrology is the study of kidney.

Neurobiology or Neuroscience is the study of the nervous system

The amount of water vapor in the air is called Humidity. The amount of water vapor that air acn hold depends on the temperature of the air. The amount of water vapor in the air as compared with the amount of water that the air could hold is called Relative humidity.

The atmosphere is a mixture of several gases. Nitrogen is the most abundant gas in the atmoshere and oxygen is next to it. It is 78% in the atmosphere and 21% is oxygen. Remaining 1% is all other gases like argon, hydrogen, neon, etc...