English Comprehension based on a passage.

Read the following passage carefully and answer the questions that follows. 

Religion can be defined as a system of beliefs and practices by means of which a group of people struggle with the ultimate problems of human life. It is the refusal to capitulate to death, to give up in the face of frustration and allow hostility to tear apart one's human associations. All men experience these unending difficulties to some degree. For some persons, however, they stand out as the most significant experiences of life. These individuals are impelled to try to discover some meaning in what seems to be senseless suffering, some fmd a road to salvation through the obstacles of human life. The beliefs and rites that make up a religion are the expressions of those who have felt the problems most intensively, who have been most acutely sensitive to the tragedies of death, the burdens of frustration, the sense of failure, the disruptive effects of hostility, powered by the strength of their feelings, such religious innovations have created 'solutions' that frequently have burst the bonds of man's sense and of nature, that have brought their adherents some relief. Thus religions are built to carry the 'peak load' of human emotional need. Defined in this way, religion is and seems likely to remain an inevitable part of human life. Although the ways of struggling with these ultimate problems are enormously diverse and seem destined for continuous change, the problems themselves are universal. A society that did not furnish its members with beliefs and practices that sought to deal with an enormous burden of tragedy unalloyed with hostility unrestrained could not flourish, if need, it could survive at all. 

Question 1. How can religion be defined?

Question 2. What, according to the writer, is 'experience' as it is understood by some?

Question 5. Why are religious beliefs and rites called innovations in the paragraph?