Questions

Allotropes are the different physical forms of an element. Here in the given options, diamond and graphite are the pair of allotropes of carbon.

Some more examples are Molecular oxygen and ozone are pair of allotropes, Black and red phosphorous are also pairs of allotropes.

The clotting of blood is a chain reaction initiated by the enzyme thrombokinase produced by the platelets. This causes prothrombin to be converted into thrombin in the presence of Ca++ion.

Thrombin combines with fibrinogen  to produce fibrin threads which entangles the corpuscles to form the clot.

Countless potential customers in retail shops go unnoticed every day. It is often this attitude of indifference that leads people to shop at other places. Make sure that you have a candidate that will meet and greet your customers. Interviewees, let your personality shine here. Let your interviewer know that you are not afraid to introduce yourself to customers, and that you will not be hiding in the back restocking something.

Designers have to either combine marketing intelligence and artistic vision themselves, or be able to delegate business duties to hired specialists, agents, etc. while they focus on the art.