Fishes take in water through their mouths and force it past the gills where the dissolved oxygen is taken up by blood.

Blood has many different functions, like transporting oxygen, regulating body temperature, and nutrients to the lungs and tissues and forming blood clots to prevent excess blood loss and carrying cells and antibodies that fight infection.

In normal, individual should maintain a systolic or diastolic pressure of 120/80 mm of Hg. Blood pressure is denoted by two values. One value is above and the other values is below. The total value that is above is the ...

The given reaction is a Redox reaction because oxidation and reduction both take place simultaneously. Also, it is a displacement reaction because hydrogen of NH₃ has been displaced by oxygen.

(1) Trachea or windpipe has rings of cartilage (it splits into the left and right lungs). (2) The epiglottis covers the larynx (the food does not enter the windpipe while eating).

CORONA-19 is a respiratory disease as it mainly affects the lungs. It is transmitted from an infected person mostly by respiratory droplets released into the air when an infected person sneezes or coughs directly without covering his mouth or nose. ...

We will find fine microscopic sulphur particles precipitating in about 2 and 3 minutes due to the reaction between sulphuric acid sodium thiosulphate.

Out of the given four materials the refractive index of glycerine is highest. So, greatest deviation of incident light ray is observed in case of glycerine.

As MnO₂ reacts with HCl to form salt, water and chlorine gas, it is basic oxide since it reacts with an acid. Moreover, oxides of metal are basic in nature whereas oxides of non-metals are acidic in nature.