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Trachea- c shaped cartilage provides structure and support, goblet cells and ciliated epithelium, secrete mucus to trap dust and pathogens and waf...

Vaccinations are given to provide immunity and protection against a certain disease or pathogen. The vaccine itself contains a weakened 'version' of the pathogen that retains its antigens but not its abil...

Reflexes allow you to respond to a stimuli (change in environment). A simple reflex begins with a receptor which are found in sense organs and allow you to detect the stimuli. An example of a sense organ ...

So to start with draw a free body diagram of a block on the slope at point A with the forces acting on it which will be the downward force of mass x g (2g) due to gravity and the reaction force 2gcos@. Th...

I never wanted to be here in the first place. After two trains, three buses and hours of car journey we find ourselves in the middle of nowhere. Yesterday we arrived late evening and the whole family was ...