What is the meaning of serendipity and give at least 3 examples?

An experiment is done to see if eating breakfast affects students performance on exams is the experimental variable the scores on the exams? How do one can get positions in 1st year mbbs and what way of study one should adapt? What material is a cool box? How can fossils be classified? What is the characteristics of a refrigerator? Is garret Morgan a scientist? How have their experiments and investigations helped the world? How many steps from Montmartre to Sacre Cour? Is a red drum fish a carnivore omnivore or herbivore? Four lobes of the cortex? What is Human Area Network Technology? Can specific types of cells be part of several different organs? What do you mean by foreign and local literature on research papers? Explain the factors that account for the loss of energy in the transfer from mouse to cat? Describe the process that occurs in a refrigerator? Is steel conductor or insulator? How much is 1 kilo? The abbreviation that represents a volume unit is? The first step in releasing the energy of glucose in the cell is known as? Change of a liquid to a gas?